When taking a penalty kick, a footballer ap..

Question 1 Report

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.

4.50ms-1

11.25ms-1

20.00ms-1

45.00ms-1

Answer Details

F = $\frac{m (v - u)}{T}$

30 = $\frac{0.75 (v - 0)}{0.05}$

v = 20ms-1

Read lesson note on Equilibrium Of Forces (WAEC)

Equilibrium Of Forces

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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 ...