Homework Help: Physics

Posted by Sean on Monday, February 21, 2011 at 7:17am.

‎1. A 3kg body moving towards the east with a speed of 5 m/s collides with a 2kg ball originally at rest. After the collision the 3kg body moves in a direction of 25 degrees N of E. If the collision is perfectly elastic Find: a) the magnitude and direction of the velocities of the ball and body after the collision. b) total momentum before and after collsion. c) change in momentum of the ball to the body. d) change in impulse of the ball and the body during collision. The Force of impact of the ball to the body if it collide head on for about 1 min. e) is there any energy lost during the collision.

Physics - drwls, Monday, February 21, 2011 at 9:33am
The collision you described should not take one minute. There should be contact for less than a second, a few pressure wave transuit times across the bodies. It should not be head-on since the two bodies move sideways (however, nonspherical body shapes can cause this to happen). There should be no energy lost since they have said the collision is elastic.

Having said that, what you have to do is apply laws of conservation of momentum AND energy to answer the remaining questions.
Physics - Sean, Wednesday, February 23, 2011 at 5:29am
thank you!! :D

Answer this Question

Related Questions

Physics - A ball of mass 0.640 kg moving east (+x direction) with a speed of 3....
phy - A ball of mass 0.540 kg moving east (+x direction) with a speed of 3.30 m/...
Physics - A 3.0kg air puck sliding at 4.0m/s collides with a 5.0kg puck. After ...
Physics - a 2kg ball is moving rightward at 2m/s when it collides with a 6kg ...
physics - A ball of mass 0.440 kg moving east (+x direction) with a speed of 3....
Physics - A ball of mass 0.640 kg moving east (+x direction) with a speed of 3....
Physics Problem - Could you please check my work? 2. A 2 kg ball of putty moving...
physics - a 2kg car moving towards the right at 4 m/s collides head on with a 8 ...
Physics - a body (A) is moving with a speed of 250m/s in the positive x-...
physics - A 0.060 kg tennis ball, moving with a speed 2.50 m/s, collides head on...

For Further Reading

First Name:
School Subject:
Answer: