Question

A body has an initial velocity of 20m/s and moves under a constant acceleration of 0.2 m/s^2. Find its velocity after 5 s​

Answer 1

please see this and mark. ne as brainliest

Answer 2

Given :

• Initial Velocity = 20 m/s
• Acceleration = 0.2 m/s²
• Time = 5 seconds

To Find :

• Final Velocity = ?

Solution :

★ By using first equation of motion we get :

• v = u + at

[ Where, v is the final velocity , u is the initial velocity, t is the time and a is the acceleration of the body ]

★ Substituting the given values in above formula we get :

→ v = u + at

→ v = 20 + 0.2 × 5

→ v = 20 + 1

→ v = 21 m/s

• Hence,the final velocity of the body is 21 m/s.

★ More knowledge ★

• First equation of motion is valid when the object is moving with constant acceleration. This equation gives relation between velocity and time.

★ Three kinematical equations of motion :

• v = u + at
• s = ut + ½at²
• v² - u² = 2as