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1) Michele kicks a 0

Physics

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1) Michele kicks a 0.75 kg ball with a 45 N force. What is the acceleration of the ball?
 

3. An 8.0 g bullet is fired from a gun at 120 m/s into a 2.0 kg block of wood sitting on a fence post. If the bullet hits the wood and remains in it, what is the speed of the block after the collision?
 

4. A 950 kg car accelerates from 0 m/s to 25 m/s in 5.0 seconds. How much power does that require?
 

5. A pulley system is used to lift a 4500 N weight using a 900 N force. If the mass moves 1.0m while the pulley is pulled 6.0m, what is the efficiency of the machine?
 

6. If a rock is launched by a slingshot at a 60° angle with a speed of 8.0m/s, how far will it go before it hits the ground?