Phy 201
Your 'cq_1_13.1' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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A ball rolls off the end of an incline with a vertical velocity of 20 cm/s downward, and a horizontal velocity of 80 cm/s. The ball falls freely to the floor 120 cm below.
• For the interval between the end of the ramp and the floor, hat are the ball's initial velocity, displacement and acceleration in the vertical direction?
V0 = 20cm/s
V2 = 0cm/s
during its uniform acceleration the ball does not end up at velocity 0
Acceleration = 6m/s^2
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• What therefore are its final velocity, displacement, change in velocity and average velocity in the vertical direction?
V2 = 0m/s
Change in velocity = 20cm/s
Avg velocity 10cm/s
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• What are the ball's acceleration and initial velocity in the horizontal direction, and what is the change in clock time, during this interval?
Acceleration = 120/80 = 1.5cm/s^2
V0 = 80cm/s
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• What therefore are its displacement, final velocity, average velocity and change in velocity in the horizontal direction during this interval?
Vf = 0cm/s
Avg vel. = 40cm/s
Change = 80cm/s
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• After the instant of impact with the floor, can we expect that the ball will be uniformly accelerated?
Yes after the impact with the floor
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• Why does this analysis stop at the instant of impact with the floor?
The velocity is then 0
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15 min
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