Students perform an experiment with the goal of finding the relationship between the force applied to...
Students perform an experiment with the goal of finding the relationship between the force applied to an object and the time required to stop the object. During the experiment, a student jumps and lands on a large sensor that measures the magnitude of the force exerted on the scale and the time it takes to bring the student to rest. During the first trial, the student jumps and lands on the sensor while keeping their legs perfect straight. Which of the following describes a proper change in procedure to correctly find the relationship between the force applied to an object and the time required to stop the object?
A. Jump to the same height and land with knees bent. This will increase the time to bring the student to rest and decrease the magnitude of the force.
B. Jump to the same height and land with knees bent. This will decrease the time to bring the student to rest and increase the magnitude of the force.
C. Jump higher and land with knees bent. This will increase the time to bring the student to rest and decrease the magnitude of the force.
D. Jump higher and land with knees bent. This will decrease the time to bring the student to rest and increase the magnitude of the force.
E. Jump higher and land with legs straight. This will increase the time to bring the student to rest and decrease the magnitude of the force.
Homework Answers
D. Jump higher and land with knees bent. This will decrease the time to bring the student to rest and increase the magnitude of the force.
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Students perform an experiment with the goal of finding the
relationship between the force applied to...
In an experiment, a student jumps and lands on a large sensor while keeping their legs...
In an experiment, a student jumps and lands on a large sensor while keeping their legs perfectly straight. The sensor measures the force exerted and the time it takes to bring the student to rest. The goal of the experiment is the test the effect of the time to bring the student to rest on the magnitude force. Which of the following describes a proper change in procedure to test this relationship, and correctly describes the effect on the time...
Learning Goal: To understand the relationship between force, impulse, and momentum. The effect of a net...
Learning Goal: To understand
the relationship between force, impulse, and momentum. The effect
of a net force ΣF⃗ acting on an object is related both to the force
and to the total time the force acts on the object. The physical
quantity impulse J⃗ is a measure of both these effects. For a
constant net force, the impulse is given by J⃗ =F⃗ Δt. The impulse
is a vector pointing in the same direction as the force vector. The
units...
22. You are landing from the jump (coming to stop at the ground h uory (es...
22. You are landing from the jump (coming to stop at the ground h uory (es opposed to To land without u anding injury (as opposed to landing yourself, you bend your knees as you land. This helps to prevent with knees locked straight) because when you are bending your a. by exerting extra force on the floor you are canceling the force the oor exerts on you b. the change in your momentum is lower c. the change in...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example,...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has an ultimate compressive strength of 1.6x104N/cm2 [8]. Consider a person who falls from a height to the...
A physic student sets out to experiment on the effect of drag forces on a ball...
A physic student sets out to experiment on the effect of drag forces on a ball of mass m by giving the ball an initial velocity nu_0 upwards and then downwards as describe below. In both cases, the ball experiences a force of air resistance whose magnitude is given by F = -k nu Where k is a positive constant. The positive direction for all vector quantities is taken to be upwards. Express all algebraic answers in terms of m....
i got 1.4 but it was incorrect and i am not sure why. Please help! READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress...
i got 1.4 but it was incorrect
and i am not sure why. Please help!
READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4....
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4. timer 5. meter stick 6. micrometer 7. 2 photogates Assemble your ramp as shown in Figure (1) in the next page. Then set up photogates in location 2 and 3. Measure the diameter (in m) of the metal balls (you will need it for speed calculations). Then, measure the weight (mass) of the ball (in kg). To have a better measurement of the time,...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet tnll on earth She lands on planet Z and is measured on earth? 5. Am syiect that is orbiting the Farth at a beight of tree Ear adi from the center of the Earth bas a weight or iNm erthis 6. A taxxicab moves ive blocks dhse north, five blocks due east and another two blocks due north. Assume all blocks are of equai...
1. Which of the following are the sites within the human body where carbon dioxide and...
1. Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules 2. Which of the following describes the most important reason for repeating an experimental investigation? A. To verify the validity of the original findings B. To expand upon the original investigation C. To manipulate the independent variable D. To attempt to disprove the hypothesis 3. Lithium has an atomic number of 3 and...
In an experiment, a student jumps and lands on a large sensor while keeping their legs perfectly straight. The sensor measures the force exerted and the time it takes to bring the student to rest. The goal of the experiment is the test the effect of the time to bring the student to rest on the magnitude force. Which of the following describes a proper change in procedure to test this relationship, and correctly describes the effect on the time...
Learning Goal: To understand
the relationship between force, impulse, and momentum. The effect
of a net force ΣF⃗ acting on an object is related both to the force
and to the total time the force acts on the object. The physical
quantity impulse J⃗ is a measure of both these effects. For a
constant net force, the impulse is given by J⃗ =F⃗ Δt. The impulse
is a vector pointing in the same direction as the force vector. The
units...
22. You are landing from the jump (coming to stop at the ground h uory (es opposed to To land without u anding injury (as opposed to landing yourself, you bend your knees as you land. This helps to prevent with knees locked straight) because when you are bending your a. by exerting extra force on the floor you are canceling the force the oor exerts on you b. the change in your momentum is lower c. the change in...
Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has an ultimate compressive strength of 1.6x104N/cm2 [8]. Consider a person who falls from a height to the...
A physic student sets out to experiment on the effect of drag forces on a ball of mass m by giving the ball an initial velocity nu_0 upwards and then downwards as describe below. In both cases, the ball experiences a force of air resistance whose magnitude is given by F = -k nu Where k is a positive constant. The positive direction for all vector quantities is taken to be upwards. Express all algebraic answers in terms of m....
i got 1.4 but it was incorrect
and i am not sure why. Please help!
READING 2 Materials fracture when the force per unit area, called STRESS, exceeds a critical value. In general, the critical stress depends on the direction as well as the magnitude of the force. For example, bones break differently when subjected to torsional (twisting) stress than when subjected to compressional (or squeezing) stress. Let us consider compressional stress. Wet human bone for 20-39 year olds has...
Impulse and Momentum Name: Date: TA's Name: Learning Objectives: 1. Understanding force ys time curves for a collision. 2. Calculating impulse using force vs. time curves. 3. Understanding the relationship between impulse and momentum. 4. Applying conservation of momentum for inelastic collisions. Apparatus: Aluminum track, track legs, two smart carts, two cart stops, and small black rectangular cart masses. Part A: Collision of a moving cart with a fixed cart cart 1 Cart stop stationary cart cart stop Consider the...
Procedure: Materials: 1. apparatus 2. 2 pieces of metal track 3. plastic or metal ball 4. timer 5. meter stick 6. micrometer 7. 2 photogates Assemble your ramp as shown in Figure (1) in the next page. Then set up photogates in location 2 and 3. Measure the diameter (in m) of the metal balls (you will need it for speed calculations). Then, measure the weight (mass) of the ball (in kg). To have a better measurement of the time,...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet tnll on earth She lands on planet Z and is measured on earth? 5. Am syiect that is orbiting the Farth at a beight of tree Ear adi from the center of the Earth bas a weight or iNm erthis 6. A taxxicab moves ive blocks dhse north, five blocks due east and another two blocks due north. Assume all blocks are of equai...
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