Question

4) assertion- an object moving with constant velocity has zero acceleration reason- acceleration = change in velocity÷time take​

Answer 1

Answer:

Correct option is

D

Assertion is incorrect but Reason is correct

As per definition, acceleration is the rate of change of velocity,

i.e., a=

time taken

change in velocity

=

Δt

Δv

.

If velocity is constant, then

Δt

Δv

=0,∴a=0

Therefore, if a body has constant velocity it cannot have non-zero acceleration.

Hence, the correct option is (D).

Answer 2

Answer:

Answer: Here, Assertion is true because constant velocity means there is no change in velocity in that time interval. Hence, acceleration will be 0/time interval = 0. The body will have zero acceleration.