Question

A body of mass 15 kg is moving with the velocity of 18.75 m/s. Find the

force required to stop it in 12 seconds.​

Answer 1

Answer:

23.4N is the answer

Explanation:

Here, mass of a body = 15kg

velocity, v = 18.75 m/s time = 12 seconds

Force = mass(m) × acceleration(a)

First find acceleration:

$a = \frac{v - u}{t}$

here, v = 18.75 m/s, u = 0 and t = 12 sec

$a = \frac{18.75 - 0}{12} = \frac{18.75}{12} = 1.56$

so a = 1.56m/s^2

force = 15 × 1.56 = 23.4N