Force And Laws Of Motion Mock Tests

22 questions available

Force And Laws Of Motion Mock Test 1

Questions: 22

Sample Questions

Class 9 Science

According to Newton's third law of motion, action and reaction forces:

A act on the same body and cancel each other

B act on different bodies and do not cancel each other

C act on the same body and produce acceleration

D act on different bodies and always produce equilibrium

Class 9 Science

A force of 50 N acts on a body of mass 10 kg for 4 seconds. The change in velocity of the body is:

A 10 m/s

B 20 m/s

C 50 m/s

D 200 m/s

Class 9 Science

A stone tied to a string is whirled in a horizontal circle. If the string breaks, the stone will:

A Move towards the centre

B Move radially outward

C Tangential to the circle

D Come to rest immediately

Class 9 Science

A body is acted upon by two forces: 10 N towards east and 6 N towards west. What is the net force?

A 16 N towards east

B 4 N towards east

C 4 N towards west

D 16 N towards west

Class 9 Science

What is the SI unit of force?

A Joule

B Newton

C Pascal

D Watt

Class 9 Science

Which of the following is a vector quantity?

A Speed

B Distance

C Momentum

D Mass

Class 9 Science

Newton's first law of motion is also known as the law of:

A Acceleration

B Inertia

C Momentum

D Force

Class 9 Science

What happens to the force of friction when the mass of a body sliding on a surface is doubled?

A It becomes half

B It remains the same

C It becomes double

D It becomes four times

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