Question

A vechile of mass 120kg is moving with a velocity of 4m/s. find the magnitude of the force that is to be applied on the vechile so that vechile have a velocity of 1 m/s after travelling a distance of 20m.

Answer 1

Explanation:

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11th

Physics

Laws of Motion

Application of Newton's Laws of Motion

A vehicle of mass 20kg is m...

PHYSICS

MEDIUM

A vehicle of mass 20kg is moving with a velocity of 4ms−1. Find the magnitude of the force that is to be applied on the vehicle so that the vehicle have a velocity of 1ms−1 after travelling a distance of 20m

A

4N

B

6N

C

7.5N

D

9.5N

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ANSWER

We know,

v2−u2=2as

Given,

s=20m,v=1,u=4

a=40−15=8−3

F=ma=8−60=−7.5N

Magnitude=7.5N

Option C is the correct answer

Answered By

toppr

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