Question

An object starts from rest with constant acceleration
on a straight horizontal track. It has velocity u after
covering distance s. Its velocity after covering distance
9s from the start is
(1) 2u
(2) 3u
(3) 4u
(4) 5u​

Answer 1

Answer:

solved

Step-by-step explanation:

u² = 2as = 18a

u = at

a²t² = 18a

at² = 18

s = at²/2 = 9

u = √18a = 3√2a = 3√18/t²