PSS 9.1 Conservation of Problems How fast, (vQa) will the quartorback be moving

Question

PSS 9.1 Conservation of Problems How fast, (vQa) will the quartorback be moving backward just after releasing the balil? Express your answer in meters per second to two significant figures. Learning Goal: (vg.),- 8.1x10-2 m/s strategy for conservation of momentum problems. An 80-kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horlzontally at 15 m/s. How fast will he be moving backward Correct just after releasing the ball? Assess Determine whether your answer is reasonable. Part F Suppose that the quarterback takes 0.30 s to return to the ground after throwing the ball. How far d will he move horizontally, assuming his speed is constant? Express your answer in meters to two significant figures. Submit Hints MyAnswer Give Up Review Part

Explanation / Answer

f)
You calculated in part E that V = 8.1*10^-2 m/s
This velocity is constant
d = V*t since there is no acceleration in horizontal direction
d = V*t
   = 8.1*10^-2 * 0.3
   = 0.024 m
Answer: 2.4*10^-2 m

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