Question

6. The velocity of a particle is zero at=0
(a) The acceleration at t = 0 must be zero.
The acceleration at t = 0 may be zero.
(e) If the acceleration is zero from t = 0 to t = 10
speed is also zero in this interval.
(d) If the speed is zero from t = 0 to t = 10
acceleration in also 0 in this interval​

Answer 1

Answer:

we know that

acceleration is the rate of change of velocity

or

a = dv / dt

so dv must be zero in order to make a as zero

so a is wrong

there can be acceleration even if initial velocity is zero

option c says if there is no accelration there will be no speed

but it is not always true

if we consider the case of uniform motion there is no accelration but still the object moves

so d is correct as the change in speed is zero in that case

Explanation:

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