Question

How many seconds does it take for net force 20N to change the velocity to a 5kg mass by 2m/s?

Answer 1

Answer:

0.5 second

Explanation:

We are given that

Force, F=20 N

Mass, m=5 kg

Change in velocity,=2m/s

We have to find the time taken to change the velocity .

We know that

Force, F=ma

Where

Acceleration, a=Change in velocity/time

$a=\frac{2}{t}$

Substitute the values

$20=5\times \frac{2}{t}$

$t=\frac{5\times 2}{20}$

$t=0.5 s$