If a dense 20.0-kg object is falling in air at half its terminal velocity (drag force...
If a dense 20.0-kg object is falling in air at half its terminal velocity (drag force is proportional to the square of the object’s speed), what is the drag force on the object at this moment?
a. 25 N
b. 50 N
c. 75 N
d. 100 N
e. 150 N
Homework Answers
Add Answer to:
If a dense 20.0-kg object is falling in air at half its terminal velocity (drag force...
An object falling through air experiences a drag force that is proportional to the square of...
An object falling through air experiences a drag force that is proportional to the square of its speed. If its cross-sectional area is defined as A, its terminal speed is proportional to: A. A-1 B. A1/2 C. A2 D. A-1/2
Calculate the terminal velocity for a pollen grain falling through the air using the drag force...
Calculate the terminal velocity for a pollen grain falling through the air using the drag force equation. Assume the pollen grain has a diameter of 7 µm and a density of 0.3 g/cm3. If this grain is released from the top of a tree (height 11 m), estimate the time it will take to fall to the ground. Hint: The pollen grain will reach its terminal velocity very quickly and will have this velocity for essentially the entire motion. Your...
When an object is falling in air at terminal velocity, (choose all correct answers) Group of...
When an object is falling in air at terminal velocity, (choose all correct answers) Group of answer choices the net force on the object is down. the net force on the object is zero. the net force on the object is up. there is no gravitational force on the object. there is a gravitational force on the object up. there is a gravitational force on the object down. the velocity is decreasing. the velocity is increasing. the velocity is constant.
5. A baseball thrown vertically up in the air experiences a drag force proportional to the...
5. A baseball thrown vertically up in the air experiences a drag force proportional to the square of its speed. In terms of g, calculate the acceleration of the stone when its speed is half its terminal speed and (a) When it is moving up [8 points] (b) When it is moving back down
n Chapter 5 we look at drag due to air resistance for falling objects. Using the...
n Chapter 5 we look at drag due to air resistance for falling objects. Using the Dv form of dr discussed in class, write a program (or solve analytically) to determine how long (sec.) and how far m) a 150 gram ball whose radius is 3.5cm would fall before it reached 75% of its terminal velocity. Assume ball falls in air whose density is 1.21 kg/m3, has a drag coefficient C .3, cross-sectional area s just the disk a sphere...
The drag force Fp on a smooth sphere falling in water depends on the sphere speed...
The drag force Fp on a smooth sphere falling in water depends on
the sphere speed V, the sphere density P. the density p and dynamic
viscosity of water, the sphere diameter Dand the gravitational
acceleration g. Using dimensional analysis with p. V and D as
repeating variables, determine suitable dimensionless groups to
obtain a reneral relationship between the drag force and the other
variables. If the same sphere were to fall through air, determine
the ratio of the drag...
1. A. An oil drop has a mass m. The drop is falling at a terminal...
1. A. An oil drop has a mass m. The drop is falling at a terminal speed vfall. Draw a free body diagram for the drop. Write the Newton’s Second law equation for the drop. Find the expression for the value of k in terms of the mass of the drop (m), the terminal speed (vfall), and g. B. The oil drop from C has a charge +q. It is now in a uniform electric field that points upward with...
1.There is a falling object, whose mass is A [kg] and experiences a force (its own weight) equal ...
1.There is a falling object, whose mass is A [kg] and experiences a force (its own weight) equal numerically to A times 9.81. The object starts from rest and the air causes a retarding force numerically equal to B times its velocity. a)Find general expression for velocity as a function of time, and draw its graph. b)Evaluate velocity for t = C (s) Depending on your value of R choose R A B C 0 6 0.180 4 1 7 ...
Problem 2. A sailboat and the drag force The force exerted by the wind on a...
Problem 2. A sailboat and the drag force The force exerted by the wind on a suilboat is approximately perpendicular to proportional to the component of the wind velocity perpendicular to the sail. For the 800-kg 25 points) sailboat shown in Figure 2, the force exerted by the wind on the sailbost is F--(550m .) where twind, is the component of the wind velocity perpendicular a force along the keel (bottom) of the boat that prevents it from moving sideways....
A 90-kg (including any equipment) skydiver drops out of a plane. Using an air density of...
A 90-kg (including any equipment) skydiver drops out of a plane. Using an air density of 1.0 kg/m3, a frontal surface area of 1.0 m2, and a drag coefficient of 0.8, what will the skydiver's terminal velocity be? A. Less than 50 m/s B. Between 50 and 100 m/s C. Between 100 and 150 m/s D. More than 150 m/s v= square root -2 (90) (-9.81)sin90/.8(1.0)(1.0)
5. A baseball thrown vertically up in the air experiences a drag force proportional to the square of its speed. In terms of g, calculate the acceleration of the stone when its speed is half its terminal speed and (a) When it is moving up [8 points] (b) When it is moving back down
n Chapter 5 we look at drag due to air resistance for falling objects. Using the Dv form of dr discussed in class, write a program (or solve analytically) to determine how long (sec.) and how far m) a 150 gram ball whose radius is 3.5cm would fall before it reached 75% of its terminal velocity. Assume ball falls in air whose density is 1.21 kg/m3, has a drag coefficient C .3, cross-sectional area s just the disk a sphere...
The drag force Fp on a smooth sphere falling in water depends on
the sphere speed V, the sphere density P. the density p and dynamic
viscosity of water, the sphere diameter Dand the gravitational
acceleration g. Using dimensional analysis with p. V and D as
repeating variables, determine suitable dimensionless groups to
obtain a reneral relationship between the drag force and the other
variables. If the same sphere were to fall through air, determine
the ratio of the drag...
Problem 2. A sailboat and the drag force The force exerted by the wind on a suilboat is approximately perpendicular to proportional to the component of the wind velocity perpendicular to the sail. For the 800-kg 25 points) sailboat shown in Figure 2, the force exerted by the wind on the sailbost is F--(550m .) where twind, is the component of the wind velocity perpendicular a force along the keel (bottom) of the boat that prevents it from moving sideways....
Most questions answered within 3 hours.
-
One of the difficulties in geolocational profiling plant-derived
drugs is obtaining reliable standards. Elaborate on this...
asked 17 minutes ago -
An animal whose limb temperature is colder compared to the core
is displaying....
d. counter current...
asked 17 minutes ago -
Find the expected value E(X), the variance Var(X) and the
standard deviation σ(X) for each of...
asked 1 hour ago -
home / study / science / physics / physics questions and answers
/ 2. an object...
asked 39 minutes ago -
What do you think every computer science department must teach,
concerning the fact that technology rapidly...
asked 37 minutes ago -
An open cart is travelling at constant speed on a level surface.
A load of coal...
asked 43 minutes ago -
A ski-jumper leaves the ski track moving in the horizontal
direction with a speed of 25.0...
asked 52 minutes ago -
A commercial lubricant, Dubdeefordy, has K = SN/SM = 13.1 for
immiscible solvent M and N....
asked 1 hour ago -
Are there any potential drawback to the job-crafting approach?
If so, how can they be minimized?
asked 52 minutes ago -
12. To accommodate growth until a new version of IP could be
standardized and adopted, a...
asked 57 minutes ago -
Create a separation scheme flow chart/diagram to isolate methyl
salicylate from a product mixture containing the...
asked 57 minutes ago -
5. The animals of which phylum use a water vascular system in
locomotion, feeding and gas...
asked 1 hour ago