Question

1. Calculate the kinetic energy of a body of mass 50 kg moving with 5 m st.​

Answer 1

Answer:

• 625 Joules is the required answer.

Step-by-step explanation:

Given:-

• Mass ,m = 50 kg

• Velocity ,v = 5m/s

To Find:-

• Kinetic Energy ,KE

Solution:-

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

• 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 × 50 × 5²

→ KE = 1/2×50 × 25

→ KE = 25×25

→ KE = 625 J

• Hence, the kinetic energy of the body is 625 Joules.

Answer 2

$kinetic \: energy = \frac{1}{2}m {v}^{2} \\ kinetic \: energy = \frac{1}{2} \times 50 \times {5}^{2} \\ kinetic \: energy = \frac{1}{2} \times 50 \times 5 \times 5 \\ kinetic \: energy = 625 \: joules$

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