Question

If a body starts to move with initial velocity of 10 m/s and uniform acceleration 2m/s2 then what will be the final velocity of the body in 4 seconds?​

Answer 1

Answer:

18 m / sec

Explanation:

Given :

Initial velocity ( u ) = 10 m / sec

Acceleration ( a )  = 2 m / sec²

Time ( t ) = 4 sec

We have to find final velocity :

We have :

v = u + a t

Putting values here :

v = 10 + 2 × 4

v = 10 + 8

v = 18 m / sec

Hence , the final velocity is 18 m / sec .

Answer 2

$\bold{\underline{\underline{Answer:}}}$

Final Velocity (v) = 18 m/s

$\bold{\underline{\underline{Step\:-\:by\:-\:step\:explaination:}}}$

Given :

• Initial velocity (u) = 10 m/s
• Uniform acceleration (a)= 2m/s²
• Time (t) = 4 seconds

To find :

• Final velocity of the body (v)

Solution :

Here we have the following quantities : initial velocity, acceleration and time.

Hence, we can use the first equation of motion.

${\bold{\boxed{\sf{\red{v\:=\:u\:+\:a\:t}}}}}$

Block in the values,

$\bold{v\:=\:10\:+\:2\times\:4}$

$\bold{v\:=\:10\:+\:8}$

$\bold{v\:=\:18}$

•°• Final Velocity (v) = 18m/s