Part A

Remember that a is equal to the slope of a velocity vs time graph.

a = 0.1 m/s / 0.1 s = 1 m/s^2

And now we use F = ma (but remember that m needs to be in kg not g)

F = 0.025 kg * 1 m/s^2 = 0.025 N

Part B

0.025 N / 0.25 = 1/10

The answer is (C)

Please best.

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