Answered: A ball with a mass of 0.75 kg is…

A ball with a mass of 0.75 kg is dropped from a height of 20 m. If the ball has a speed of 18 m/s just before hitting the ground, what force of air resistance acted on the ball?

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter2: Newtonian Mechanics-single Particle

Section: Chapter Questions

Problem 2.34P: A particle is released from rest (y = 0) and falls under the influence of gravity and air...

See similar textbooks

Similar questions

A body weighing 64 lb is dropped from a height of 100 ft with an initial velocity of 10 ft/s. It is known that air resistance is proportional to the velocity of the body and that the limiting velocity for this body is 128 ft/s. Find the constant of proportionality.
It takes 2.10 s for a small ball with a mass of 0.080 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released, assuming that air resistance is negligible
A baseball is thrown vertically upward with an initial velocity of 9 m/s. Neglecting air friction, how long will it take for it to reach the top of its flight?
Suppose that a cannon fires a cannon ball of mass 25 kg straight up with an initial velocity of 30 meters per second. If the air resistance experienced by the cannon ball is half of the cannon ball's velocity at each moment in time, what is the maximum height the cannon ball will reach, supposing the cannon ball leaves the cannon at a height of one meter above the ground?
In the absence of air resistance, if a ball is thrown vertically upward with a certain initial speed, on returning to its original level it will have the same speed. When air resistance is a factor, will the ball be moving faster, the same, or more slowly than its throwing speed when it gets back to the same level? Why? (Physicists often use a “principle of exaggeration” to help them analyze a problem. Consider the exaggerated case of a feather, not a ball, because the effect of air resistance on the feather is more pronounced and therefore easier to visualize.)
. A small plane flying at 180 kph at an altitude of 240m, is to drop an inflatable raft to flood victims stranded on a flat roof. How far from the roof should the pilot release the package so that it will land on the roof?
A parachutist drops freely from an aeroplane for 10 s before the parachute opens out. Then he descends with a net retardation of 2.5 m/s2, If he bails out of the plane at a height of 2495 m and g= 10 m/s², his velocity on reaching the ground will be (a) 5 m/s 87. (b) 10 m/s (c) 15 m/s" (d) 20 m/s
Neglecting friction and air resistance, a car with an initial velocity of 76.5 km/h coasts up a hill and comes to stop at the hill's top. What must be the height of the hill (in meters)
A rock is thrown from a bridge 21 m above water with an initial speed of 14 m/s. Assuming negligible air resistance, what is the speed that the rock hits the water with, in meters per second?
In the absence of air resistance, ball A is dropped 1.0 m above the ground atexactly the same time ball B, which has a mass twice that of ball A, is thrownhorizontally at 2.0 m/s (also from 1.0 m above the ground). Which ball strikes the ground first?
Assuming negligible air resistance, calculate the final speed of a rock thrown from a bridge 33.06m above water with an initial speed of 12.7m/s.
Three youths push a 40.0-kg block of ice so that it begins to coast on a frozen lake. With an initial speed Vi of 3.00 m/s, the block of ice now moves up an icy ramp at the edge of the lake. Neglecting air resistance and in the absence of any friction between the ice block and the frozen lake and ramp, use the CMEP to calculate how high up the ramp (h in the figure) the block of ice moves before stopping. As a suggestion, use the base of the ramp as GZ. 0.204 m 0.625 m 0.459 m 0.511 m 0.165 m 0.270 m O O O