Q44 of 124 Page 56

A passenger in a moving train tosses a coin which falls behind him. This shows that the motion of train is:

A. Accelerated B. Uniform


C. Retarded D. along circular track

Since, when the coin is tossed the train accelerates forward whereas coin due to inertia tends to move with the same velocity when tossed.

More from this chapter

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42

The inertia of an object tends to cause an object:

A. To increase its speed


B. To decrease its speed


C. To resist a change in its state of motion


D. To decelerate due to friction

 43

When we talk of force acting on a body, it usually means:

A. Electrical force


B. Balanced force


C. Unbalanced force


D. Nuclear force

 45

‘When a hanging carpet is beaten with stick, the dust particles start coming out of it’. This phenomenon can be best explained by making use of:

A. Newton’s third law of motion


B. Newton’s law of gravitation


C. Newton’s first law of motion


D. Newton’s second law of motion

 46

A water tanker filled up to two-thirds of its tank with water is running with a uniform speed. When the brakes are suddenly applied, the water in its tank would:

A. Move backward


B. Move forward


C. Rise upwards


D. Remain unaffected