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Old 03-20-2006, 10:16 AM   #1
GreekWarrior
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A couple of physics questions for yous

1. A 0.001kg bullet 1000m/s strikes and passes through a 2kg block initially at rest. The bullet emerges from the block with a speed of 400m/s. To what maximum height will the block rise above its initial position?



2. High-speed stroboscopic photographs show that the head of a golf club of mass 0.23kg is travelling at 54.3m/s just before it strikes a 0.045kg golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 41.1m/s. Find the speed of the golf ball just after impact.


3. A railroad car of mass 2.17 x 10^4 kg is moving with a speed of 4.4m/s. It collides with four other coupled railroad cars, each of the same mass as the single car and moving in the same direction with an intial speed of 2m/s.

a) What is the speed of the five cars after the collision?

b) How much energy is lost in the collision?
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Old 03-20-2006, 10:49 AM   #2
Wally
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Playing with Newton's second laws are we?
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Old 03-20-2006, 01:36 PM   #3
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Do your own homework jp

What is this?...And using my math skills, they are impossible
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Old 03-20-2006, 06:45 PM   #4
Bubba
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Quote:
Originally Posted by GreekWarrior
1. A 0.001kg bullet 1000m/s strikes and passes through a 2kg block initially at rest. The bullet emerges from the block with a speed of 400m/s. To what maximum height will the block rise above its initial position?

I'm guessing the bullet is coming up through the bottom of the block, correct?
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Old 03-20-2006, 10:24 PM   #5
GreekWarrior
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Quote:
Originally Posted by Bubba
I'm guessing the bullet is coming up through the bottom of the block, correct?

Yep.


These are acouple of question from my physics assignment.
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