Question

A rubber ball bounces off of a wall with an initial speed v and reverses its direction so its speed is v right after the bounce. As a result of this bounce, which of the following quantities of the ball are conserved? A) the kinetic energy of the ball B) the momentum of the ball C) both the momentum and the kinetic energy of the ball D) None of the above quantities are conserved.

Answer #1

1. A rubber ball with a mass of 1.35 kg is stuck in a tree. To
knock it out, you throw a golf ball with a mass of 0.0450 kg at it.
The golf ball hits the rubber ball with a speed of 20.0 m/s and
bounces off with a speed of 10.0 m/s. The golf ball is moving in
the same direction horizontally after the collision as it was
before it hit the rubber ball. When the golf ball...

A basketball hits the Earth and bounces off it with the same
speed in an elastic collision. With reference to a system
containing the Earth and the ball, which of the following
statements applies?
a. The momentum of the basketball is conserved because it
bounces with the same speed.
b. Momentum is not conserved in this particular type of
collision.
c.The momentum change of the ball is equal and opposite to the
momentum change of the earth.
d. Momentum conservation...

A ball is moving towards a wall with the speed of 5 meters per
second. It bounces back with the same speed. Which of the following
is true? A. The momentum of the ball changed, the energy didn’t
change B. The momentum of the ball didn’t change, the energy
changed C. Both the momentum and the energy of the ball changed D.
Neither the momentum nor the energy of the ball changed

A 0.32-kg ball is moving horizontally at 30 m/s just before
suddenly bouncing off a wall Just after the bounce, it is moving
horizontally at 25 m/s but in the opposite direction.
(a) What is the magnitude of the change in momentum of the ball
during the bounce?
(b) What percentage of the ball's original kinetic energy was
lost in the collision?
please show work on paper

A rubber ball of mass m is dropped from a height h. If the ball
loses energy on each bounce so that its speed just after each
bounce is 90% of its speed just before each bounce, then Önd an
expression for the height the ball reaches after the 3rd bounce

16. A ball traveling with an initial momentum of 4 kg-m/s bounces off a wall and comes back in the opposite direction with a momentum of -2 kg-m/s.
What is the change in momentum of the ball?
17. A 5000 kg truck traveling with a velocity of 10 m/s due north collides head-on with a 1500 kg car traveling with a velocity of 20 m/s due south. The two vehicles stick together after the collision.
What is the total momentum...

A 6.76 kg bowling ball is moving down a
frictionless and bumpy hill. Its initial speed is
1.48 m/s.
1) What is the magnitude of its initial momentum? (in units of
kg m/s). True or false
2) As the above ball frictionlessly moves down the hill, its
potential energy and kinetic energy increase.
3) Its initial kinetic energy is:
A) 6.76 J,
B) 7.40 J,
C) 20.0 J,
D) 66.2 J, or
E) none of these
4) The initial elevation...

You drop a ball from a height of 1.7 m , and it bounces back to
a height of 1.3 m .
Part A
What fraction of its initial energy is lost during the
bounce?
Part B
What is the ball's speed just before the bounce?
Express your answer to two significant figures and include the
appropriate units.
Part C
What is the ball's speed just after the bounce?

A ball with mass of 0.025 kg is thrown horizontally with
velocity of 1.5 m/s toward a wall in positive X direction. It
collides with the wall, then bounces back to the left with velocity
of 1.0 m. The Collison takes 0.015s.
What is the total initial momentum?
b) What is the total final momentum?
c)What is change in momentum?
d)What is the impulse?
e) What is the average force acting on the wall by the ball
during the collision?...

1.) A ball of mass (m) traveling at a speed (v) hits and sticks
to a block of mass (M) sitting at rest on a frictionless table.
Answers for this problem will be in terms of the variables m, v, M
and g. Part A: What is speed of the block after the collision? Part
B: Show that the mechanical energy is not conserved in this
collision. What percentage of the ball’s initial kinetic energy is
lost? Include a Free...

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