Question # 1

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

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10 s

20 s

5 s

40 s

Angular momentum

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Scalar

Axial vector

Polar vector

At 45° angle

The horizontal range of projectile, at a certain place, depends upon

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the mass of the projectile

velocity of projection

angle of projection

angle as well as velocity of projection

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

A train of 150 m length is going towards north direction at a speed of 10 ms^-1. A parrot files at a speed of 5 ms^-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

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12 s

8 s

15 s

10 s

An aircraft is moving with a velocity of 300 ms^-1. If all the forces acting on it are balanced, then

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It still moves with the same velocity

It will be just floating at the same point in space

It will be fall down instantaneously

It will lose its velocity gradually

The short distance between two points direction from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

The path described by a projectile is called its

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orbit

trajectory

range

distance

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

When two protons are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

None of these

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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Momentum

Kinetic energy

Velocity

Total energy

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

Swimming becomes possible because of______law of motion.

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First

Second

Third

None of these

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

When a person jumps off the ground, the reaction force of the ground is

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greater than the weight of the person

smaller than the weight of the person

equal to the weight of the person

zero

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

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