Question # 1

The acceleration produced in a moving body is always in the direction of applied

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Velocity

Force

Speed

Momentum

A string is stretched by two equal and opposite force 10 N each. The tension in the string is:

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Zero

5 N

10 N

20 N

The formula to determine the centripetal force is:

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Ms

mv²/r

Ns

Ns^-1

The study of motion without reference to mass and force.

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Mechanics

Dynamics

Kinematics

None of these

The momentum of two or more than two bodies intersacting remain constant in:

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Law of inertia

Isolated system

System

None

All divers need to wear seat belt because of effect of:

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Inertia

Gravity

Car force

Nil

How much force is needed to body of mass 10 kg from falling:

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100 N

150 N

200 N

300 N

Momentum is quantity

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Scalar

Vector

Base

All

S.I unit of force is:

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N

Ns

s

None

The Atwood machine can be used to find the acceleration due to gravity using the equation

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g = 2 (m1 x m2)/(m1 + m2) a

g = (m1 - m2)/(m1 + m2) a

g = (m1 + m2)/(m1 - m2) a

Mass is measured by:

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Spring balance

Measuring cylinder

Physical Balance

None of these

Motion of the rocket is the example of which law?

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First law

Second law

Third law

Law of momentum

The unit of π is:

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N

m

s

None

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Physics 9th Class English Medium Unit 3 Online Test MCQs With Answers

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