A player passes a basketball to another player who catches it at the same level

Question

A player passes a basketball to another player who catches it at the same level from which it was thrown. The initial speed of the ball is 7.1 m/s, and it travels a distance 4.6 m. What is (a) the initial angle of the ball with the horizontal and (b) its time of flight? A 0.53 kg billiard ball initially at rest is given a speed of 12.0 m/s during a time interval of 4.0 ms. (a) What average force acted on the ball during this time? (b) Name the law of motion used for this problem. A 71 kg parent and a 19 kg child meet at the center of an ice rink. They place their hands together, and push. (a) Is the acceleration of the parent more than, less than, or the same as the child's? (b) Is the force experienced by the child more than, less than, or the same as the force experienced by the parent? (c) If the acceleration of the child is 2.6 m/s^2 in magnitude, what is the magnitude of the parent's acceleration? (d) Other than F = ma, which law of motion was needed to solve this problem? A skateboarder is riding the half-pipe. During acceleration state whether each of the following is always true, never true, or sometimes true. (a) The skater is instantaneously at rest. (b) The acceleration of the skateboarder is in the same direction as the net force. (c) The acceleration of the skater is at right angles to the net force. (d) The skater is moving in the direction of the net force.

Explanation / Answer

10. A

AVERAGE FORCE = 0.53 *12/4 = 1.59 N

B. SECOND LAW OF MOTION

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