Question

A soccer player kicks a soccer ball (m = 0.42 kg) accelerating from rest to 32.5m/s in 0.21s. Determine the force that sends soccer ball towards the goal.
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Answer 1

Answer:

65 N

Explanation:

m = Mass of ball = 0.42 kg

u = Initial velocity = 0

v = Final velocity = 32.5 m/s

a = Acceleration = $\dfrac{v-u}{t}$

t = Time = 0.21 s

Force is given by

$F=ma$

$\Rightarrow F=m\dfrac{v-u}{t}$

$\Rightarrow F=0.42\times \dfrac{32.5-0}{0.21}$

$\Rightarrow F=65\ \text{N}$

The force that sends soccer ball towards the goal is 65 N.