Question # 1

By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s²)

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58.8 m/s

49 m/s

65 m/s

19.6 m/s

Acceleration produced in a body by the force varies

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inversely as the applied force

directly as the applied force

directly as the mass of the body

none of them

Which one of the following is dimensionless.

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Acceleration

Velocity

Density

Angle

Tick the conservation force:

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Tension in a string

Air resistance string

Elastic spring force

Frictional force

The motion of a body in a straight line is the motion in

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one dimension

two dimension

three dimension

four dimension

When a shall explodes a mid-air, the total momentum of its fragments is

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less than the momentum of shell

equal to the momentum of shell

greater than the momentum of shell

none of them

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Anitparallel to each other

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

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3 N

4 N

5 N

6 N

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

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24/13

10/3

3

4,8

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

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Moving forward and gaining speed

Moving forward and losing speed

Moving forward with uniform speed

Moving backward with uniform speed

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

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First

Second

Third

None of these

Acceleration in a body is always produced in the direction of :

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Velocity

Weight

Force

Both B and C

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

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