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Calculate the work required to be done to stop a car of 1500 k

Science

Class 9

NCERT

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Chapter 10: Work and Energy

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An object of mass, m is moving with a constant velocity,

v

. How much work should be done on the object in order to bring the object to rest?

Calculate the work required to be done to stop a car of

1500 k g

moving at the velocity of

60 km / h

In each of the following a force,

F

is acting on an object of mass

M

. The direction of displacement is from west to east shown by the longer arrow. Observe the diagram carefully and state whether the work done by the force is negative, positive, or zero.

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Chapter 13: Natural Resourses

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Chapter 14: Improvement in Food Resources

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Question

Medium

Solving time: 3 mins

Calculate the work required to be done to stop a car of $1500 k g$ moving at the velocity of $60 km / h$ ?

Views: 6,061 students

Updated on: Mar 25, 2023

Book:

Science (NCERT)

Text solutionVerified

When a object is moving with a constant velocity, it possess K.E

K . E = \frac{1}{2} \times m \times v^{2}

So, in order to bring the object to rest i.e its same magnitude of energy is required so, as the final final energy comes to zero.

v = 60 km / h r = 16.66 m / s

So, magnitude of work that needs to be done

= \frac{1}{2} \times m \times v^{2}

Hence, work required to stop the car

= \frac{1}{2} \times 1500 \times 16.6 6^{2}

= 208166.7 J = 208.17 k J

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Practice more questions from Science (NCERT)

An object of mass, m is moving with a constant velocity,

v

. How much work should be done on the object in order to bring the object to rest?

Calculate the work required to be done to stop a car of

1500 k g

moving at the velocity of

60 km / h

In each of the following a force,

F

is acting on an object of mass

M

. The direction of displacement is from west to east shown by the longer arrow. Observe the diagram carefully and state whether the work done by the force is negative, positive, or zero.

View all

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Question Text	Calculate the work required to be done to stop a car of $1500 k g$ moving at the velocity of $60 km / h$ ?
Updated On	Mar 25, 2023
Topic	Work and Energy
Subject	Science
Class	Class 9
Answer Type	Text solution:1 Video solution: 22
Upvotes	2404
Avg. Video Duration	5 min

Calculate the work required to be done to stop a car of $1500 k g$ moving at the velocity of $60 km / h$ ?

Text solutionVerified

Video solutions (22)

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