Question

A booly of mass 20kg is accelarted from
Rest to 25ms in Just 6sec
calculate the work
done in accelerating the body​

Answer 1

Question

• A body of mass 20 Kg is accelerated from rest and covers a distance of 25 m in 6 seconds, calculate the work done in accelerating the body.

Given

• Mass (m) = 20 Kg
• Distance (s) = 24 m
• Time (t) = 6 sec

To find

• Work done (W)

Solution

• Speed = Distance/Time
• Speed = 24/6
• Speed = 4 m/s

Here the body is moving, so kinetic energy is experienced by the body,

• W = 1/2 mv²
• W = 1/2×2000×4×4
• W = 1000×4×4
• W = 16000

Hence, the work done is 16000 J

Answer 2

Answer:

A body of mass 20 Kg is accelerated from rest and covers a distance of 25 m in 6 seconds, calculate the work done in accelerating the body.

Given

Mass (m) = 20 Kg

Distance (s) = 24 m

Time (t) = 6 sec

To find

Work done (W)

Solution

Speed = Distance/Time

Speed = 24/6

Speed = 4 m/s

Here the body is moving, so kinetic energy is experienced by the body,

W = 1/2 mv²

W = 1/2×2000×4×4

W = 1000×4×4

W = 16000

Hence, the work done is 16000 J

Explanation: