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Question1
A 0.145-kg baseball pitched horizontally at 39 m/s strikes bat and is popped straight up to a height of 32 m. If contact time between the bat and ball is 2.45 ms, compute the average force [exerted by the bat on the ball] during contact. [Let the positive axis lie along the line from the batter to the pitcher, with batter at the origin.]
Question2
A 240-g block is pressed against a spring of force constant 1.45 kN/m until block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to horizontal. Using energy considerations, decide how far up the incline the block moves from its original position before it stops under following conditions.
Different values of the energy
What is final speed of the block
What travel time is required for the landing
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