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Answers
Answer:
(a)Average velocity is defined as the ratio of total displacement of the object to the total time taken.
(b) The change in velocity of the object during any time interval is not zero and is expressed by the physical quantity known as acceleration.
acceleration is defined as the rate of change of velocity with respect to time.
(c) momentum measures the quantity of motion causes by the body. It is defined as the product of mass and velocity of the body. At any instant, its direction is the same as the direction of the body.
(d) Any action which causes pull on a body is called force. force cannot be seen but it can be judged only by the effect which produces in various bodies around us.
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Answer:
a. if the velocity of a body moving in a particular direction changes with time the ratio of displacement to the time taken in entire journey is called average velocity
b. acceleration is the rate of change of velocity with time
c. mass × velocity can be defined as momentum
d. a force is a push or a pull that create motion in a body
Explanation:
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