Question

a body of mass 1 kg moving on a smooth horizontal surface with velocity 5 metre per second is to be brought to rest in 5 seconds the magnitude of force required is​

Answer 1

Solve by this method

#queen♥️

Answer 2

Given:

A body of mass 1 kg moving on a smooth horizontal surface with velocity 5 metre per second is to be brought to rest in 5 seconds.

To find:

Magnitude of force ?

Calculation:

• First , let's find out the acceleration of the object.

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

$\implies \: a = \dfrac{0 - 5}{5}$

$\implies \: a = \dfrac{- 5}{5}$

$\implies \: a = - 1 \: m {s}^{ - 2}$

Now, force will be :

$F = m \times a$

$\implies \: F = 1 \times ( - 1)$

$\implies \: F = - 1 \: N$

So, magnitude of force needed is 1 N.