00:01
Hello, in this question first we can check if the statement in option a is true or not.
00:05
Acceleration a is the rate of change in velocity v of an object.
00:25
So when there is no change in velocity, the acceleration of the object is equal to zero.
00:35
A constant velocity implies that there is no change in velocity.
00:46
Therefore when object moves with constant velocity, its acceleration is equal to zero.
01:08
Therefore the given statement is true.
01:12
Now coming to part b, we know that the acceleration is the rate of change in velocity.
01:17
So the acceleration points in the direction of motion of the object when its velocity is increasing.
01:34
The acceleration points in the opposite direction of motion when velocity is decreasing.
02:06
The direction of motion of the object is in the direction of velocity of the object.
02:17
So here, since the velocity and acceleration are acting in the same direction, the acceleration of the object will be acting in the direction of motion of the object.
02:29
As we said, the acceleration points in the direction of motion when the velocity is increasing.
02:38
When velocity of the object increases, the speed of object also increases...