Question

a body has initial velocity 16m/s and final velocity 0, distance 0.4m.Time is not given how to find retardation.

Answer 1

Answer:

-320$ms^{-2}$

Explanation:

use formula:-

$v^{2} = u^{2} + 2aS$

v (final velocity) = 0

u (initial velocity) = 16m/s

S (distance) = 0.4m

by plugging in the values:-

=> -(16)^2 = 2*-a*(0.4)

=> 320$ms^{-2}$

but as it is retardation,

a = -320$ms^{-2}$ -------------[negative acceleration]

think this is the correct one budd......