An experiment was performed on a 2-kg block. Forces of 5, 10 and 15 Newtons respectively were applied to the block for 5 seconds. Describe the difference in final speed between the three trials.

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Physics

Joyce Lawrence

6 February, 17:59

An experiment was performed on a 2-kg block. Forces of 5, 10 and 15 Newtons respectively were applied to the block for 5 seconds. Describe the difference in final speed between the three trials.

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Aisha · Answer 1

From Newton's second law of motion,

F = ma = mv/t

Where F is force, m is mass, a is acceleration, v is velocity, and t is time. Substituting the known values from the given,

(a) 5 N = (2 kg) (v) / (5 s); v = 12.5 m/s

(b) 10 N = (2 kg) (v) / (5 s); v = 25 m/s

(c) 15 N = (2 kg) (v) / (5s); v = 37.5 m/s

Therefore, the greater the amount of force, the higher is the final velocity of the block.