Physics Mcqs For Test Preparation Of All Competitive Exam With Answers

Physics Mcqs

Two automobiles are 150 kilometers apart and traveling toward each other. One automobile
is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they
meet?

A. 2.5
B. 2.0
C. 1.75
D. 1.5
E. 1.25

A car travels 40 kilometers at an average speed of 80km/h and then travels 40 kilometers at
an average speed of 40km/h. The average speed of the car for this 80-km trip is:

A. 40km/h
B. 45km/h
C. 48km/h
D. 53km/h
E. 80km/h

A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around,
and returns to Hither. The time for this round trip is 2 hours. The magnitude of the average
velocity of the car for this round trip is:

A. 0
B. 50 km/hr
C. 100 km/hr
D. 200 km/hr
E. cannot be calculated without knowing the acceleration

A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and
returns to Hither. The time for this round trip is 2 hours. The average speed of the car for
this round trip is:

A. 0
B. 50 km/h
C. 100 km/h
D. 200 km/h
E. cannot be calculated without knowing the acceleration

The coordinate of a particle in meters is given by x(t) = 16t − 3.0t3, where the time t is in
seconds. The particle is momentarily at rest at t =

A. 0.75 s
B. 1.3 s
C. 5.3 s
D. 7.3 s
E. 9.3 s

A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given
by v = bt2, where b is a constant. The expression for the distance traveled by this car from its
position at t = 0 is:

A. bt3
B. bt3/3
C. 4bt2
D. 3bt2
E. bt3/2

A ball rolls up a slope. At the end of three seconds its velocity is 20 cm/s; at the end of eight
seconds its velocity is 0. What is the average acceleration from the third to the eighth second?

A. 2.5 cm/s2
B. 4.0 cm/s2
C. 5.0 cm/s2
D. 6.0 cm/s2
E. 6.67 cm/s2

The coordinate of an object is given as a function of time by x = 7t − 3t2, where x is in meters
and t is in seconds. Its average velocity over the interval from t = 0 to t = 4 s is:

A. 5m/s
B. −5m/s
C. 11m/s
D. −11m/s
E. −14.5m/s

The velocity of an object is given as a function of time by v = 4t − 3t2, where v is in m/s and
t is in seconds. Its average velocity over the interval from t = 0 to t = 2s:

A. is 0
B. is −2m/s
C. is 2m/s
D. is −4m/s
E. cannot be calculated unless the initial position is given

The coordinate of an object is given as a function of time by x = 4t2 −3t3, where x is in meters
and t is in seconds. Its average acceleration over the interval from t = 0 to t = 2 s is:

A. −4m/s2
B. 4m/s2
C. −10m/s2
D. 10m/s2
E. −13m/s2

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