Question # 1

A body is thrown from a height h with speed u, it hits the ground with speed V

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The value of V is maximum if the body is thrown vertically downward

The value of V is maximum if the body is thrown vertically upwards

The value of V is minimum if the body is thrown horizontally

The value of V does not depend on the direction of which it is thrown

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

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The horse on the ground

The horse on the cart

The ground on the horse

The ground on the cart

In the expression F x t, the force F is

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total force

instantaneous force

average force

all of them

The entity which measures the quantity of motion in a body is called

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force

energy

momentum

power

A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is

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Zero

Infinity

V

2 V

A 5 kg mass is falling freely, the force acting on, it will be

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19.6 N

9.8 N

5 N

Zero

The dimension of linear inertia is:

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MLT²

ML°T^-2

ML°T°

MLT^-1

The SI units of momentum is

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kg m s^-2

kg ms

kg m s²

N-s

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

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4 : 5

7 : 9

16 : 25

1 : 1

The path described by a projectile is called its

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orbit

trajectory

range

distance

Swimming is based on the principle of

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Newton's 1st law

Newton's 2nd law

Newton's 3rd law

All

Biomass includes:

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Crop residue

Natural vegetation

Animal dung

All of these

A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds

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25 m

20 m

50 m

9.8 m

The magnitude of the displacement is a line from initial position to final position which is

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straight

curved

either be curved or straight

none of them

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

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4.2 m

8.4

12.6

None of these

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

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Mg

1/2 Mg

Zero

2 Mg

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ECAT Physics Chapter 3 Motion and Force Online Test MCQs With Answers

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