Question

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Answer 1

Answer:

1.  (i)  S.I Unit- Newton or kg m s^(-2). Hence, Dimension = [M^(1) L^(1) T(-2)]

   (ii) S.I Unit- m s^(-2). Hence Dimension = [M^(0) L^(1) T(-2)]

2. (i) The motion of a body moving with constant speed along a circular path is called Uniform Circular Motion. Here, the speed is constant but the velocity changes.

 (ii) The motion of a body moving with changing/ variable speed along a circular path is called Non-Uniform Circular Motion.

3. Acceleration is defined as rate of change of velocity with respect to time. It is vector quantity. Its S.I. Unit is m s^(-2).

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