# A constant

The Newton’s second law of motion states that,

F = m× a

a = F / m

Where,

F is the force on the body,

m is the mass of the body and

a is the acceleration of the body.

Given,

F = -50 N

The negative sign is because the force applied to the body is retarding and acts in the opposite direction to the motion of the body.

m= 20 kg

Thus, the acceleration is

The first equation of motion at time t, can be written as,

v = u + at

where,

v is the final velocity,

u is the initial velocity,

a is the acceleration of the body.

For the body to stop the final velocity must be equal to zero, thus the equation becomes,

Ans: the total time taken by the body to come to rest is 6 seconds.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :

Figure <span langPhysics - Exemplar

Figure <span langPhysics - Exemplar

Two uniform solidHC Verma - Concepts of Physics Part 1

A block of known HC Verma - Concepts of Physics Part 1