Question

Alls. (1) 5 m s', (ii) 50 m
A body moves from rest with a uniform acceleration
and travels 270 m in 3 s. Find the velocity of the
body at 10 s after the start.
Ans. 600 m s-1
​

Answer 1

Answer :-

Given :-

▪️Distance traveled in 3s = 270 m

▪️Initial Velocity = 0 m/s

◾Now from

▪️S = ut + 1/2 at²

→ 270 = 0(3) + 1/2× a ×3²

→ 270 = 9/2 × a

→ 30 = 1/2 × a

→ a = 30 × 2

→ a = 60 m/s²

◾Now we have to find velocity after 10 sec . ( after start of motion)

▪️v = u + at

→ v = 0 + 60 × 10

→ v = 600 m/s