A skateboarder is standing at the top of a tall ramp waiting to begin a trip....
A skateboarder is standing at the top of a tall ramp waiting to begin a trip. The skateboarder has A) kinetic energy only. Eliminate B) potential energy only. C) both kinetic and potential energy. D) neither kinetic or potential energy.
Homework Answers
Potential Energy only. An object at an elevated position will have stored energy while not in motion (potential energy) defined by (m*h*g) or (weight*h) due to gravity. Once the object starts moving the object transitions to Kinetic Energy which is defined by (.5*m*v^2).
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A skateboarder is standing at the top of a tall ramp waiting to
begin a trip....
4. A 20.0 kg box at the top edge of a ramp has a speed of...
4. A 20.0 kg box at the top edge of a ramp has a speed of 3.40 m/s as it begins to slide down the ramp. The ramp has a slope of 28.0° above horizontal. It moves down the ramp a distance of 5.30 m before coming to a stop. After drawing the picture and the FBD of the forces on the box, answer the following questions using only Energy and Work. (a) What is the network done on the...
Part A When the car is at the top of the ramp, it has its maximum...
Part A When the car is at the top of the ramp, it has its maximum potential energy O its minimum potential energy Submit Request Answer Part B As the car descends, O potential energy is converted into kinetic energy O kinetic energy does not change kinetic energy is converted into potential energy O potential energy does not change Submit Request Answer Part 6 Submit Request Answer Part At the bottom, all of car's energy is kinetic potential Submit Request...
help on this question The marble is initially at rest at the top of the ramp...
help on this question
The marble is initially at rest at the top of the ramp (point A), a height h above the end of the ramp. When it reaches the bottom of the ramp, it has some speed v (which we need to know to predict the landing point on the floor). So, the initial potential energy of the marble at point A has been transformed into kinetic energy. Its important to recognize that its kinetic energy is in...
A 5 Kg box initially at rest slides down a ramp with friction acting on the...
A 5 Kg box initially at rest slides down a ramp with friction acting on the box. At the top of the ramp the box has a potential energy of 120 J. At the bottom, its kinetic energy is 30 J and the work done by the friction has a magnitude of 20 J. What is the mechanical energy of the box at the bottom of the ramp? A. 120J B. 150J C. 110J D . 140J E. None of...
A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N...
A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N force parallel to the ramp. The ramp is 2.0 m long and tilted at 17 degrees. The speed of the box at the top of the ramp is 0.80 m/s. (Consider the system to be the box + ramp + earth.) A.) What is the equation for conservation of energy for the system? B.) How much work W does the force do on the...
QUESTION 4 Compare the case of an object sliding down a ramp and the same object...
QUESTION 4 Compare the case of an object sliding down a ramp and the same object rolling without slipping down a ramp with the same slope, and from the same height. Which of the following is true? a. The sliding object reaches the bottom faster, but the increase in total kinetic energy is the same b. Both objects reach the bottom at the same time, but the rolling one has more kinetic energy .The sliding object takes longer to reach...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description of potential energy? water moving a waterwheel a skateboarder at the top of a halfpipe III. the blades of a fan turning IV. hot water molecules moving rapidly in a cup of tea V. a parachutist ready to jump out of a plane Select one: O a. I, III, and IV O b. II, III, and V O c. All of the above O...
A 3 kg block (block A) is released from rest at the top of a 20...
A 3 kg block (block A) is released from rest at the top of a 20 m long frictionless ramp that is 4 m high. At the same time, an identical block (block B) is released next to the ramp so that it drops straight down the same 4 m. Find the values for each of the following for the blocks just before they reach ground level. (a) gravitational potential energy Block A ? Block B ? (B) kinetic...
A 305-N solid sphere of radius 0.4 m is released from rest and rolls without slipping...
A 305-N solid sphere of radius 0.4 m is released from rest and rolls without slipping from the top to the bottom of a ramp of length 5 m that is inclined at an angle of 25 degrees with the horizontal as shown in the figure below. a. What type(s) of energy does the object have when it is released? Gravitational Potential Energy (GPE) Rotational Kinetic Energy (KE) Translational Kinetic Energy (KE) Both KE and KE, GPE, KE, and KE,...
please show steps :) 21. A block of mass m slides down a rough ramp of...
please show steps :)
21. A block of mass m slides down a rough ramp of height h. Its initial speed is zero. Its final speed at the bottom of the ramp is v. When it reaches the bottom of the ramp, how much mechanical energy (kinetic + potential) energy was converted into heat? V = 0 A) 0 B) mgh – mv2 C) mgh + mv2 D) mgh E) None of these
4. A 20.0 kg box at the top edge of a ramp has a speed of 3.40 m/s as it begins to slide down the ramp. The ramp has a slope of 28.0° above horizontal. It moves down the ramp a distance of 5.30 m before coming to a stop. After drawing the picture and the FBD of the forces on the box, answer the following questions using only Energy and Work. (a) What is the network done on the...
Part A When the car is at the top of the ramp, it has its maximum potential energy O its minimum potential energy Submit Request Answer Part B As the car descends, O potential energy is converted into kinetic energy O kinetic energy does not change kinetic energy is converted into potential energy O potential energy does not change Submit Request Answer Part 6 Submit Request Answer Part At the bottom, all of car's energy is kinetic potential Submit Request...
help on this question
The marble is initially at rest at the top of the ramp (point A), a height h above the end of the ramp. When it reaches the bottom of the ramp, it has some speed v (which we need to know to predict the landing point on the floor). So, the initial potential energy of the marble at point A has been transformed into kinetic energy. Its important to recognize that its kinetic energy is in...
QUESTION 4 Compare the case of an object sliding down a ramp and the same object rolling without slipping down a ramp with the same slope, and from the same height. Which of the following is true? a. The sliding object reaches the bottom faster, but the increase in total kinetic energy is the same b. Both objects reach the bottom at the same time, but the rolling one has more kinetic energy .The sliding object takes longer to reach...
Below are five descriptions of the kinetic and potential energy of objects. Which is a description of potential energy? water moving a waterwheel a skateboarder at the top of a halfpipe III. the blades of a fan turning IV. hot water molecules moving rapidly in a cup of tea V. a parachutist ready to jump out of a plane Select one: O a. I, III, and IV O b. II, III, and V O c. All of the above O...
A 305-N solid sphere of radius 0.4 m is released from rest and rolls without slipping from the top to the bottom of a ramp of length 5 m that is inclined at an angle of 25 degrees with the horizontal as shown in the figure below. a. What type(s) of energy does the object have when it is released? Gravitational Potential Energy (GPE) Rotational Kinetic Energy (KE) Translational Kinetic Energy (KE) Both KE and KE, GPE, KE, and KE,...
please show steps :)
21. A block of mass m slides down a rough ramp of height h. Its initial speed is zero. Its final speed at the bottom of the ramp is v. When it reaches the bottom of the ramp, how much mechanical energy (kinetic + potential) energy was converted into heat? V = 0 A) 0 B) mgh – mv2 C) mgh + mv2 D) mgh E) None of these
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