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Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

1,806.

A body accelerates uniformly from rest at 2ms-2. Calculate the magnitude of its velocity after travelling 9m

A.

4.5 ms-1

B.

6.0ms-1

C.

18.0-1

D.

36.0-1

Correct answer is B

v = U2+2as=02+2×2×9=6m/s

1,807.

A body moving with an initial velocity U accelerates until it attains a velocity of V within a time t. The distance, s covered by the body is given by the expressions

A.

s = (vu2)t

B.

s = (v+2u2)t

C.

s = (v+u2)t

D.

s = (2v+u2)t

Correct answer is C

No explanation has been provided for this answer.

1,808.

The term rectilinear acceleration means the rate of increase of

A.

velocity along a circular path in a unit time

B.

distance along a rectangular path in a unit time

C.

displacement along a straight-line path in a unit time

D.

velocity along a straight-line path in a unit time

Correct answer is D

No explanation has been provided for this answer.

1,809.

An object of mass 2 kg moves with a uniform speed of 10ms-1 for 5s along an straight path. Determine the magnitude of its acceleration

A.

0 ms-2

B.

1 ms-2

C.

3 ms-2

D.

4 ms-2

Correct answer is A

a = vut=10105=0m/s

1,810.

A body moving at a constant speed accelerates when it is in

A.

rectilinear motion

B.

translational motion

C.

circular motion

D.

vibrational motion

Correct answer is A

No explanation has been provided for this answer.