Question

A force of 1000 N was applied to stop a car that was moving with constant velocity the car stopped after moving 20m how much is the work done

Answer 1

Explanation:

Work = Force × Displacement × Cos Theta

= 1000 × 20 × Cos 180 ( opposite direction )

= 1000 × 20 × ( -1 )

= - 20000 joules.

I hope it helps you. If you have any doubts, then don't hesitate to ask.

Answer 2

GivEn:

• Force (F) applied to stop the car = 1000 N
• Distance covered (D) by the car after the force applied = 20 m

To find:

• How much is the work done?

SoluTion:

For work done,

Work done by the force applied to stop the car = Force applied on the car × Distance covered by it after the force applied

W = F × d

Where,

• W = Work done
• F = Force
• d = Distance travelled

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★ Now, Putting given values in formula,

➟ W = 1000 × 20

➟ W = 20000 J

➟ or, W = 20 kJ

Hence, The work done by the force applied to stop the car is 20 kJ or 20000 J.