Please please help me, don't guess please my test is timed !! A tennis player hit a .057-kg ball with a force of 40 N. The duration of the force was .05 s.
1. Calculate the impulse delivered to the ball. (1pt)

2. What was the change in momentum of the ball? (1pt)

3. What was the velocity of the ball as it left the tennis racket? (1pt)

4. What would happen to the ball's velocity if it remained on the tennis racket longer than .05 s? (2pts)

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the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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