Q. 294.5( 14 Votes )

A car of mass 2400 kg moving with a velocity of 20 m s-1 is stopped in 10 seconds on applying brakes. Calculate the retardation and the retarding force.

Answer :

Mass, m = 2400 kg

Initial velocity, u = 20 m/s


Time, t = 10 s


Final velocity, v = 0 m/s


We know that,


a = v-u/t


=-20/10


=-2 m/s2


Now,


Force, F = ma


=2400 (-2)


= 4800 N


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Conservation of MomentumQuiz | Conservation of MomentumQuiz | Conservation of Momentum33 mins
Test your knowledge of Laws of motionTest your knowledge of Laws of motionTest your knowledge of Laws of motion44 mins
Quiz | Lets Say Hey to Newton!!!Quiz | Lets Say Hey to Newton!!!Quiz | Lets Say Hey to Newton!!!50 mins
NCERT | Newton's Second LawNCERT | Newton's Second LawNCERT | Newton's Second Law41 mins
Lakhmir Singh | Force and Laws of Motion Part-3Lakhmir Singh | Force and Laws of Motion Part-3Lakhmir Singh | Force and Laws of Motion Part-347 mins
What is Impulse?What is Impulse?What is Impulse?44 mins
Understanding Action-Reaction PairUnderstanding Action-Reaction PairUnderstanding Action-Reaction Pair36 mins
Quiz | Become a Master of Conservation of MomentumQuiz | Become a Master of Conservation of MomentumQuiz | Become a Master of Conservation of Momentum32 mins
Lets understand Circular MotionLets understand Circular MotionLets understand Circular Motion42 mins
Lakhmir Singh | Force and Laws of Motion Part 1Lakhmir Singh | Force and Laws of Motion Part 1Lakhmir Singh | Force and Laws of Motion Part 142 mins
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
caricature
view all courses