Question

7. On a highway, a car with a mass of 1.1 × 103 kg is
travelling at 25 m/s. What is the kinetic energy of the
car? Show all your work.

Answer 1

Given:-

• Mass,m = 1.1 × 10³ kg

• Velocity ,v = 25m/s

To Find:-

• Kinetic Energy ,KE

Solution:-

As we know that Kinetic Energy is defined as the energy possess by body due to its motion.

• KE = 1/2mv2

Where,

KE is the Kinetic Energy

m is the mass

v is the speed/velocity

Substitute the value we get

→ KE = 1/2× 1.1×10³ × 25²

→ KE = 1/2× 1100 × 625

→ KE = 550 × 625

→ KE = 343750 J

Therefore, the kinetic energy of the car is 343750 Joules.