Question

a body starts from rest and attains acceleration of 2m/s2. in 10 seconds. find its velocity in m/s

Answer 1

Answer:

use the first equation of motion

v=u+at

a=2

u=0

t=10

v=find out

Answer 2

Answer:

• Final velocity is 20 m/s.

Given:

• Acceleration (a) = 2 m/s²
• Time taken (t) = 10 sec

Explanation:

$\rule{300}{1.5}$

We are given that a body starts from rest and accelerates with a rate of 2 m/s² in 10 seconds. We are asked to find it's final velocity.

Since, it starts from rest, so it's initial velocity will be zero. From first kinematic equation we know,

$\longrightarrow{\sf{v\ =\ u\ +\ at}}$

Solving,

$\longrightarrow{\sf{v\ =\ u\ +\ at}} \\ \\ \\ \longrightarrow{\sf{v\ =\ 0\ +\ 2 \times 10}} \\ \\ \\ \longrightarrow{\sf{v\ =\ 0\ +\ 20}} \\ \\ \\ \longrightarrow{\sf{v\ =\ 20\ m/s}}$

∴ The final velocity of the body is 20 m/s.

$\rule{300}{1.5}$