Question

Consider a body moving rectilinearly with velocity under the influence of an acceleration a, which of the following statements(s) is/are correct
(A) when the direction of velocity is reversed, then the direction of acceleration must be reversed
(B) 'a' can be non zero when = 0
(C) 'a' must be zero when = 0
(D) 'a' may be zero when970​

Answer 1

Answer:

(D) "a" may be zero when 970

Answer 2

Answer:

Option B and Option D are the right choices.

Explanation:

Given that a body is moving rectilinearly with some velocity and an acceleration a.

Option A is false because it is possible that direction of acceleration is reversed earlier and then direction of velocity is reversed.

Option B is true because when velocity of body is 0, then body can have some acceleration.

Option C is false because it is not compulsory that when v=0 then acceleration also remains 0.

Option D is true because acceleration may be zero or non zero when v=0 for the body.