Question

1. a force of 4 n is applied to a ball for 0.75 s. what is the impulse?

Explanation:

Step1: Recall impulse - force - time formula

The formula for impulse $J$ is $J = F\times\Delta t$, where $F$ is the force and $\Delta t$ is the time interval.

Step2: Substitute given values

Given $F = 4\ N$ and $\Delta t=0.75\ s$. Then $J=4\times0.75$.

Step3: Calculate the impulse

$J = 3\ N\cdot s$

Answer:

$3\ N\cdot s$