A couple of physics questions for yous

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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?

GreekWarrior

Playing with Newton's second laws are we?

Wally

Do your own homework :laughing: jp

What is this?...And using my math skills, they are impossible :laughing:

chris_knows

I'm guessing the bullet is coming up through the bottom of the block, correct?

Bubba

Yep.

These are acouple of question from my physics assignment. :laughing:

GreekWarrior