Question

1.
a tennis ball is dropped from a height of 2 m and it rebounds 95
cm. use g=10 m/s^2, and the tennis ball weights .058 kg.

a) find the change of momentum when the ball is at a height of
1.5 m downward and at 0.5 m downward. which i got -3.14 kg m/s for
the 1.5 m, and -0.18 kg m/s, and then what is the impulse exerted
on the object during that change of momentum?

b) compute the speed of the object just before it hits the
floor, and compute the speed of tbe object immediately after the
collision

c) draw the momentum vs time graph when the ball is moving
downwards.

d) find the impulse exerted by the floor on the object

e) how much energy did the object lose at impact?

Answer #1

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A ball with a mass of 2.0 kg is dropped from a height of 1.5 m.
The ball hits the floor and bounces back to a height of 1.1 m. Use
energy conservation wherever possible to answer these questions.
(a) What is the speed of the ball just before it reaches the floor
initially? (b) What is the speed of the ball just after it leaves
the floor? (c) How much work is done by the floor? (d) The
coefficient...

A ball falls from height of 20.0 m, hits the floor, and rebounds
vertically upward to height of 15.5 m. Assume that
mball = 0.335 kg.
(a) What is the impulse (in kg · m/s) delivered to the ball by
the floor?
b) If the ball is in contact with the floor for 0.0400 seconds,
what is the average force (in N) the floor exerts on the ball?

a
ball of mass 0.175kg is dropped from rest from a height of 1.25m.
it rebounds from the floor to reach a height of 0.825m. what
impulse was given to the ball by the floor? magnitude______
kg

A tennis ball is dropped from 1.95 m above the ground. It
rebounds to a height of 0.932 m.
Part 1.With what velocity does it hit the ground? The acceleration
of gravity is 9.8 m/s 2 . (Let down be negative.) Answer in units
of m/s.
Part 2. With what velocity does it leave the ground? Answer in
units of m/s.
Part 3. If the tennis ball were in contact with the ground for
0.00859 s, find the acceleration given...

A 6kg ball is dropped and hits the floor vertically moving with
speed 11m/s and rebounds with half the speed (moving
upwards). The change in momentum of the ball is __________kg m/s.
(Answer to nearest ones digit.)

A
ball of mass 2.25 kg is released from rest at height 5.29 m above
the floor. It falls, hits the ground, and rebounds to height 3.19 m
above the floor. Assume none of the losses are due to air friction.
Find the impulse, in N-s, exerted by the floor on the ball. The
sign of your answer will give the direction of the impulse.

A 160 g ball is dropped from a height of 2.2 m , bounces on a
hard floor, and rebounds to a height of 1.1 m . The figure(Figure
1) shows the impulse received from the floor.
Part A
What maximum force does the floor exert on the ball?

A 2.33 kg ball is
dropped from a height of 3 m. The ball then bounces back
upward a distance of 2.2 m. How much energy was lost in the
collision with the ground?
50.2 J
18.3 J
68.5 J
118.7 J
A 2.33 kg ball is
dropped from a height of 3 m. The ball then bounces back
upward a distance of 2.2 m. How much momentum does the ball have
immediately after bouncing off the ground?
5.13 kg m/s
21.6...

After dropping from a height of 1.50m onto a concrete floor, a
50g ball rebounds to a height of .90m. A. Find the impulse acting
on the ball as it dropped. B. Find the impulse acting on the ball
as it rebounds. C. Find the impulse on the ball while it was in
contact with the floor. Please show all calculations and steps
clearly.

A 20 g ball is dropped from a height of 1.8 m. It rebounds from
the ground with 80% of the speed it had just before it hit the
ground. Assume that during the bounce the gound causes a constant
force on the ball for 75 ms. What is the force applied to the ball
by the ground in N?

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