Question

an object is falling down with a speed of 30m/s.after 3 seconds its velocity will be_____m/s(g=10m/s^2)​

Answer 1

Given:-

• Initial velocity ,u = 30m/s

• Time taken ,t = 3 s

• Acceleration ,a = 10m/s²

To Find:-

• Final velocity ,v

Solution:-

By using 1st equation of motion

• v = u+at

Substitute the value we get

→ v = 30 + 10×3

→ v = 30 + 30

→ v = 60m/s

Therefore, the final velocity of the object is 60m/s.

Additional Information!!

Some equation of motion are

• v = u +at

• s = ut +1/2at².

• v² = u² + 2as

Here,

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement or Distance

t is the time taken

Answer 2

Answer:

Given -

             Intial velocity= 30m/s

             Time taken= 3s

             Acceleration= 10m/s²

To find -

             Final velocity

solution -

   by using 1st equation of motion

⇒v= u+at

We get

      v= 30+10×3

      v= 30+30

      v= 60m/s