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Q. A horse canters away from its trainer in a straight line, moving 120 m away in 15.0 s. It then turns abruptly and gallops halfway back in 5.0 s.

(a) Calculate its average speed.

(b) Calculate its average velocity for the entire trip, using "away from the trainer" as the positive direction.

Q. A 1.2 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 48.0 cm/s. What are the amplitude of the subsequent oscillations? The block's speed at the point where x= 0.400 A?

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Category:- Physics
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