Question

If the initial velocity of an object is equal to final velocity, the value of acceleration is (a) positive (b) negative (c) zero (d) infinite

Answer 1

Explanation:

initial velocity = final velocity

formula

V = U + a t

V-U = a t

0= acceleration

Answer 2

Answer:

If the initial velocity of an object is equal to the final velocity, the value of acceleration is zero i.e.option (c).

Explanation:

From the kinetics of motion, we will use the first equation of motion to solve this question. It shows the relation between the initial velocity of the body, the final velocity of the body, the acceleration produced by the body, and the time in which the acceleration is produced i.e.

$v=u+at$        (1)

Where,

v=initial velocity

u=final velocity

a=acceleration of the body

t=time taken to produce the acceleration

From the question we have,

the initial velocity of an object is equal to the final velocity i.e.

∴v=u

So, equation (1) becomes,

$u=u+at$

$a=\frac{u-u}{t}=\frac{0}{t}=0$

Hence, if the initial velocity of an object is equal to the final velocity, the value of acceleration is zero i.e.option (c).