An external force of magnitude 100N acts on a particle of mass 0.15kg for 0.03s. Calculate the change in the speed of the particle

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A. 50ms‾¹
B. 25ms‾¹
C. 20ms‾¹
D. 5ms‾¹

Correct Answer: Option C

C. 20ms‾¹

Explanation

a = F/m=1000.15=666.7

v = u + at

= 0 + 66.7 x 0.03

= 20m/s²

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