Question

A body of mass 5 kg is moving with a
constant velocity 3 m/s in order to stop
it with in an interval of 6 seconds
calculate the force required
A А.
2N
B 5N
C 2.5 N
D
4.5 N​

Answer 1

GivEN:

• Mass (m) = 5kg
• Initial velocity (u) = 3m/s
• Final Velocity (v) = 0 m/s
• Time (t) = 6 seconds

To Find:

• Force required to stop Object?

SoluTion:

Firstly We have to Find the acceleration;

A = v-u/t

a = (0 - 3)/6

a = -3/6

a = -1/2 m/s²

Now, We can find the Force required to stop the body;

F = M × A

F = 5 × -1/2

F = -2.5 Newton

Hence,

The body need 2.5 N Of Force for stopping.