Question

(3) A body moves with a uniform acceleration of 2 m/s. If the initial velocity of the
body is 10 m/s, find the velocity of the body after 2 seconds. ​

Answer 1

u=10m/s

a=2m/s^2

t=2 seconds

v=u+at

v=10+2×2

v=14m/s

Answer 2

Answer:

Given :

• Acceleration of the body = 2 m/s².
• Initial velocity of the body = 10 m/s.
• Time = 2 s.

To Find :

• Final velocity of the body = ?

Solution :

Using first equation of motion :

⇒ v = u + at

⇒ v = 10 + 2*2

⇒ v = 10 + 4

⇒ v = 14 m/s

Hence, the final velocity of the body after 2 seconds are : 14 m/s.

Important Formulas :

• v = u + at
• s = ut + ½at²
• v² - u² = 2as
• Average velocity = ∆x/∆t
• Average speed = Total path/Total time
• Instantaneous velocity = dx/dt
• Average acceleration = ∆v/∆t
• Instantaneous acceleration = dv/dt
• ∆x = x2 - x1 (Displacement)