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.

Stekesh5

1 year ago

you be real scholar 👍

Alyssateniola

4 years ago

In your question the mass of the ball is 0.075kg while in the answer given you changed it to 0.75 kg which caused in error in the workings

The answer suppose to be
F= m(v-u)
_______
t
where F= 30N
m= 0.075kg
t= 0.05s
u= 0
30 = 0.075(v-0)
___________
0.05

Making v= 45 ms-1