Question

acceleration of body is 10m/s2. what is the increase in its velocity in 4 s

Answer 1

Answer:

40 m/s

Explanation:

Given:

• Initial velocity = u = 0 m/s
• Time taken = t = 4 seconds
• Acceleration of the body = a = 10 m/s²

To find:

• Change in the velocity Δv

Using the first equation of motion:

V=u+at

V=0+10×4

V=40 m/s

The final velocity of the body is equal to 40 m/s

Increase in velocity = Final velocity-Initial velocity

Increase in velocity = 40-0

Increase in velocity = 40 m/s

The increase in the velocity is equal to 40 m/s

Answer 2

✰ Given -

• Acceleration (a) = 10m/s^2
• Initial Velocity (u) = 0m/s
• Time = 4sec

✰ To Find -

• Increase in Velocity after 4 sec (Final Velocity)

✰ Solution -

We know 1st Equation of Kinematics,

$✓ \: v = u + at$

Placing Values,

$⟶v = 0 + 10 \times 4$

$⟶v = 10 \times 4$

$⟶v = 40m/s$

⛬ Increase in Velocity after 4sec is 40m/s