Q. 84.3( 7 Votes )
A ball moving on a surface stops after travelling some distance. Does it violate the first law of motion? Explain.
The first law states that when a body in motion stays in motion and a body at rest stays at rest until an external force is applied. But in the case of rolling of the ball, the ball stops after some time because frictional force is acting on the ball every time which keeps on reducing its speed.
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When we talk of force acting on a body, it usually means:
A. Electrical force
B. Balanced force
C. Unbalanced force
D. Nuclear forceLakhmir Singh & Manjit Kaur - Physics
If we release a magnet held in out hand, it falls to the ground. The force which makes the magnet fall down is an example of:
A. Balanced force
B. Unbalanced force
C. Magnetic force
D. Muscular forceLakhmir Singh & Manjit Kaur - Physics
A ball moving on a surface stops after travelling some distance. Does it violate the first law of motion? Explain.Together with Science
Write or false for the following statements:
1 N is that force which produces acceleration of 1 m s-2 in a body of mass 1 g.Evergreen - Science
(a) Write an activity to demonstrate balanced and unbalanced forces.
(b) State whether the forces are balanced or unbalanced in each case:
(i) Suitcase dropped from a height.
(ii) A bicycle moving with constant velocity on a straight road.
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