Laws Of Motion Test - 2

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Laws Of Motion Test - 2

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Laws Of Motion Test - 2

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Question 1/3
1 / -0

If a car moves round a circular road of radius r at a constant speed v

Correct

Wrong

Skipped
A
its velocity changes and the acceleration is v/r².

Correct

Wrong

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B
there is no force on the car since its speed is constant

Correct

Wrong

Skipped
C
the force on the car is towards the centre and its magnitude mv²/r

Correct

Wrong

Skipped
D
the force on the car is outwards from the centre and its magnitude is mv²/r
Question 2/3
1 / -0

When a girl rides round the corner on her bicycle at a steady speed

Correct

Wrong

Skipped
A
there is no force when she takes the turn

Correct

Wrong

Skipped
B
the force on her bicycle is only her weight when she takes the turn

Correct

Wrong

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C
the centripetal force is due to the friction between the tyre and the ground

Correct

Wrong

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D
the force on the girl is always outwards.
Question 3/3
1 / -0

A small mass of 0.2 kg is whirled round in horizontal circle at the end of a string of length

Correct

Wrong

Skipped
A
0.2 N

Correct

Wrong

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B
1.6 N

Correct

Wrong

Skipped
C
0.8 N

Correct

Wrong

Skipped
D
1.0 N

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