Question

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Answer 1

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• Initial velocity, u = 0

• Distance travelled, s = 400 m

• Time taken, t = 20 s

• We know, s = ut + ½ at2

• Or, 400 = 0 + ½ a (20)2

• Or, a = 2 ms^2

• Now, m = 7 MT = 7000 kg, a = 2 ms^2

• Or, F = ma = 7000 — 2 = 14000 N

Answer 2

Explanation:

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