Question

A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s and kicks it in the same direction as it is moving, increasing its speed to 12.8 m/s. What magnitude impulse did the soccer player deliver to the ball?

Answer 1

To develop this problem it is necessary to use the concepts related to Impulse.

The impulse is defined as the change in velocity at the rate of mass, that is

`L = m\Delta V,`

Where,

m = Mass

`\Delta V =` Change in Velocity

This change in velocity can be expressed as,

`L = m(v_2-v_1)`

`L = 0.45*(12.8 - 3.2)`

`L = 0.45*9.6`

`L= 4.32 Kg.m/s`

Therefore the magnitude of the impulse is 4.32 Kg.m/s