Question

if the velocity of the object decreases with time, the acceleration is negative, and the motion is called decelerated motion.true or false , give reason for your answer​

Answer 1

Answer:

Explanation:

TRUE....

velocity is decreasing,that means an opposite motion along with straight motion is taking place that's why the velocity is decreasing.

Now if motion is opposite then at some point of time velocity will be 0

& we know that

a=v-u/t

(Obj. Will come at rest means final velocity is 0)

=0-u/t=negative

Means (-) acceleration..

Thanks

Answer 2

Answer:

It is true ,  if the velocity of the object decreases with time , the acceleration is negative ,and the motion is called decelerated  . .

Explanation:

• General principle states that an object accelerates in the opposite direction from the velocity when it slows down. As a result, this object is also moving forward.

• Retardation is the result of a negative acceleration, which acts to slow down an object's motion in the opposite direction.
• A decrease in velocity, or momentum, is referred to as deceleration.

Hence , it is true that , if the velocity of the object decreases with time , the acceleration is negative ,and the motion is called decelerated  .

#SPJ2