Question

4) A girl of mass 55 kg throws a ball of mass 0.8 kg against a...

4) A girl of mass 55 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s and it bounces back with this same speed. The ball is in contact with the wall 0.05 s. Find
(a) change in momentum of the ball
(b) the average force exerted on the wall by the ball?
(c) if the girl stands on a frictionless icy surface while throwing the ball, describe and quantify the girl’s motion.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Use the initial and final velocity to find the change in momentum and divide the change in momentum by contact time to find the force exerted as shown below

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A ping pong ball (mass 0.0029 kg) strikes a bowling ball (mass 14 kg) head on...
A ping pong ball (mass 0.0029 kg) strikes a bowling ball (mass 14 kg) head on with a speed of 89 m/s and bounces off elastically. What is the speed of the ping pong ball after impact? Ignore rotational motion.
A ping pong ball (mass 0.0034 kg) strikes a bowling ball (mass 9 kg) head on...
A ping pong ball (mass 0.0034 kg) strikes a bowling ball (mass 9 kg) head on with a speed of 93 m/s and bounces off elastically, i.e. energy is also conserved. What is the speed of the bowling ball after impact? Ignore rotational motion.
A soft ball (m = 0.14 kg) moving horizontally to the right hits a wall with...
A soft ball (m = 0.14 kg) moving horizontally to the right hits a wall with a speed of 16.2 m/s. After the collision the ball bounces back and moves horizontally to the left at a speed of 14.4 m/s. If the collision lasts for 0.0015 s, what is the magnitude of the (average) force exerted on the ball by the wall?
A pitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a...
A pitcher throws a 0.15 kg baseball so that it crosses home plate horizontally with a speed of 15 m/s. The ball is hit straight back at the pitcher with a final speed of 29 m/s. (Assume the direction of the initial motion of the baseball to be positive.) (a) What is the impulse delivered to the ball? kg·m/s (b) Find the average force exerted by the bat on the ball if the two are in contact for 2.0 ✕...
Identical twins, each with mass 55 kg, are on ice skates and at rest on a...
Identical twins, each with mass 55 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack and she throws it horizontally at 3.8 m/s to Twin B. After throwing the backpack, twin A gains a velocity of 1.4. Neglecting any gravity effects, what are the subsequent speeds of Twin B in m/s.
A billiard ball of mass m = 0.25 kg strikes the cushion of a billiard table...
A billiard ball of mass m = 0.25 kg strikes the cushion of a billiard table at θ1 = 46° and a speed v1 = 25 m/s. It bounces off at an angle of θ2 = 670 and a velocity of v2 = 17 m/s. What is the magnitude of its change in momentum (in kg·m/s)?
1. A rubber ball with a mass of 1.35 kg is stuck in a tree. To...
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 bowling player throws a ball of mass 7 kg with a velocity of 5m/s and...
A bowling player throws a ball of mass 7 kg with a velocity of 5m/s and collides a pin of mass 1.6 kg. The ball and pin move seperately after the collision. a) What is the momentum of the ball before the collision b) Calculate the total momentum of the ball and the pin before the collision c) What is tge velocity of the pin after the collision if the velocity of the ball is 3 m/s.
A tennis ball of mass 50g is hit against a wall. It hits the wall going...
A tennis ball of mass 50g is hit against a wall. It hits the wall going right at 5 ms-1 and rebounds to the left at 4 ms-1, changing its momentum by 0.45 kg m/s left. If the ball is in contact with the wall for 0.2 s what is the average force applied by the wall on the ball (your answer is a vector)? Select one: a. 2.25 N Left b. 0.45 N Right c. 0.45 N Left d....
A ball with mass of 0.025 kg is thrown horizontally with velocity of 1.5 m/s toward...
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?...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT