1. A reference frame attached to the earth
(a) is an inertial frame.
(b) cannot be an inertial frame because the earth is revolving round the sun.
(c) may be non-inertial frame.
(d) None of the above
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2. If the position of object changes with respect to its surroundings in a given time. The object is said to be in
(a) motion
(b) rest
(c) only circular motion
(d) None of the above
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3. In oscillatory motion
(a) particle moves along a straight line.
(b) particle moves in a circular path.
(c) particle moves to and fro about a point.
(d) None of the above
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4. Motion of a sliding body on an inclined plane is an example of
(a) rectilinear motion.
(b) circular motion.
(c) oscillatory motion.
(d) rotational motion.
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5. Which of the following is correct?
(a) Displacement cannot be zero.
(b) Magnitude of displacement may be greater than distance.
(c) Distance may be greater than or equal to magnitude of displacement.
(d) Distance is always greater than magnitude of displacement.
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6. In which of the following cases of motions, the distance and displacement are equal?
(a) If the car is moving an straight road.
(b) If the car is moving in circular path.
(c) The pendulum is moving to and fro.
(d) The earth is revolving around the sun.
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7. As the object covers unequal distances in equal intervals of time, it is said to be in ……… motion.
(a) uniform
(b) linear
(c) non-uniform
(d) equilibrium
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8. Speed of body is
(a) the distance covered by a moving body in unit time.
(b) always equal to velocity of body.
(c) a vector quantity.
(d) None of the above
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9. The speed of an ant is 75 cm/sec. The ant travels in a day is
(a) 64800 m/day
(b) 648000 m/day
(c) 648000 cm/day
(d) 64800000 cm/day
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10. Car travels from A to B at a speed of 40 km/h and returns back at a speed of 60 km/h. Its average speed will be
(a) 40 km/h
(b) 48 km/h
(c) 50 km/h
(d) 60 km/h
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