Question

A body of mass 20 kg moving north with a velocity of 0.5 ms-1 is subjected to a force of 15 N North for 2.9 s. Calculate the final velocity of the body.pleassse

Answer 1

The final velocity of the body is 2.675 m/s.

To find the final velocity of the body, we use the formula below.

Velocity  

This can be defined as the ratio of displacement to time. the S.I unit of velocity is m/s.

⇒ Formula:

• F = m(v-u)/t.................... Equation 1

⇒ Where:

• F = Force
• m = mass of the body
• v = final velocity
• u = initial velocity
• t = time.

⇒ make v the subject of the equation

• v = (Ft/m)+u.................. Equation 2

From the question,

⇒ Given:

• F = 15 N
• m = 20 kg
• u = 0.5 m/s
• t = 2.9 s

⇒ Substitute these values into equation 2

• v = [(15×2.9)/20]+0.5
• v = 2.675 m/s

Hence, the final velocity of the body is 2.675 m/s.

Learn more about final velocity here: brainly.com/question/24815498