A particle moves along a straight line path. After some time it comes to rest. The motion is with constant acceleration whose direction with respect to the direction of velocity is:

Question

A particle moves along a straight line path. After some time it comes to rest. The motion is with constant acceleration whose direction with respect to the direction of velocity is: (A) positive throughout motion (B) negative throughout motion (C) first positive then negative (D) first negative then positive

Tardigrade Admin · Accepted Answer

Here velocity is decreasing, so acceleration will be opposite to the direction of motion and hence, it will be negative w.r.t. the direction of velocity till it comes to rest.

Q. A particle moves along a straight line path. After some time it comes to rest. The motion is with constant acceleration whose direction with respect to the direction of velocity is:

positive throughout motion

negative throughout motion

first positive then negative

first negative then positive

Here velocity is decreasing, so acceleration will be opposite to the direction of motion and hence, it will be negative w.r.t. the direction of velocity till it comes to rest.