Question

(a)
A superball of mass 0.1kg is dropped from a height of 3 meters
above the floor. It then bounces up to a height of 2.6 meters. Find
the velocity of the ball the instant before it reaches ground
level. (Hint: use energy equations)

(b) Calculate the velocity the ball must have after the bounce
at the instant it leaves the ground the reach the height of 2.6
meters.

(c) Use these velocities to calculate the change i. momentum
of the ball.

Answer #1

Thank you

A 2.0kg rubber ball is dropped from a height of 1.0m above the
floor.
a. Using energy (not
equations of motion), what is the ball’s speed just before it hits
the floor?
b. If it then bounces back to a height of 0.70m, what is the
speed of the ball, just as it leaves the ground? Again, use energy
rather than equations of motion.
c. How much kinetic
energy is lost?

A 0.6 kg ball is dropped from a height, h, of 2 meters (at point
A). It hits the ground and bounces back up to a height of 1 meter
(at point B) on its first bounce. (3 pts each)
a. What is the total energy of the ball at A?
b. What is the total energy of the ball at B?
c. Why did the ball not bounce back up to its starting
height?

A 1.5 kg ball is dropped from a height of 3 m above the ground
and upon striking the ground bounces up to a height of 2 m.
Ignoring air resistance, find the time it takes the ball to bounce
up to a height of 2 m after it is dropped.

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

A 2.0-kg ball is dropped from a height of 5.0 meters. It hits
the ground and bounces upward. If it reaches a height of only 3.2
m, determine the magnitude of the work done by non-conservative
forces in this situation.

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...

An object is dropped from a height of 50 meters starting at rest. Using the principle of conservation of energy, What is its final velocity just before it hits the ground? What is the time it takes to fall?

A ball is dropped from rest from the top of a building with
height 50 meters. At the same instant, you throw a ball upward from
ground level carefully aimed to hit the falling ball. If the
initial speed of your throw is 19 m/s, then the two balls collide
at a height above the ground equal to:
a) 4.50 m b) 7.61 m c) 12.2 m d) 16.1 m e) 2.15 m

a 50.0 grams ball is released from rest from initial height of
100 meters, the ball falls vertically downward to the ground and
rebound to a lower height of 81% which mean the ball rebound to 81
percent of previous height for the first bound. 81 meters. a)what
is the speed of the ball immediately after the first bounce? b)
what height does the ball reach after the fifth bounce? c) what is
the impulse from the ground on the...

Two balls are placed, one above the other, and dropped from a
height of 1.05 m. The bottom ball has a mass which is 6 times the
mass of the top ball. They are dropped from rest. When the balls
strike the floor, they have a head on, elastic collision with one
another. (Assume that the bottom ball strikes the floor, instantly
reverses direction, and then collides with the top ball, which is
still travelling downward.) How high will the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 6 minutes ago

asked 8 minutes ago

asked 10 minutes ago

asked 11 minutes ago

asked 11 minutes ago

asked 12 minutes ago

asked 12 minutes ago

asked 16 minutes ago

asked 26 minutes ago

asked 50 minutes ago

asked 51 minutes ago