When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off.

A. 4.50ms^-1
B. 11.25ms^-1
C. 20.00ms^-1
D. 45.00ms^-1

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Question 3 :

JAMB 2019

The length of the seconds hand of laboratory clock is 0.1m. Calculate the speed at the top of the seconds hand

A. 1.05 à— 10\(^{-2}\)ms\(^{-1}\)
B. 1.85 × 10\(^{-4}\)ms\(^{-1}\)
C. 9.50 à— 10\(^{-1}\)ms\(^{-1}\)
D. 5.25 à— 10\(^{-3}\)ms\(^{-1}\)

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