Question

Q1. body of mass 10 kg is moving with a velocity of 5 m/s attains v of 35m/s in 5 second find the force applied on body to change its velocity

Answer 1

Answer:60 N

Explanation:

F=m(v-u)/t

=10(35-5)/5

=60N

Answer 2

Explanation:

Given :

Mass of body is 10 kg .

Initial Velocity is 5 m/s .

Final Velocity is 35 m/s .

Time Taken is 5 sec.

To Find :

Force Applied

Solution :

Firstly we will find Acceleration :

Using 1st Equation :

$\longmapsto\tt\boxed{v=u+at}⟼$

Putting Values :

$\longmapsto\tt{35=5+a(5)}$

$\longmapsto\tt{30=5a}⟼30=5a$

$\longmapsto\tt{a=\cancel\dfrac{30}{5}}</p><p>$

$\longmapsto\tt\bf{a=6\:{m/s}^{2}}$

So , The Acceleration of the body is 6 m/s² ...

Now ,

For Force :

Using Formula :

$\longmapsto\tt\boxed{Force=Mass\times{Acceleration}}⟼ </p><p>$

Putting Values :

$\longmapsto\tt{10\times{6}}$

$\longmapsto\tt\bf{60\:N}$

So , The Force is 60 N ...