Question

A father weighs 100kg and is running at a velocity of 4 m/s. What is the fathers kinetic energy?

Answer 1

800J

Step-by-step explanation:

we know,

k.E=(1/2)mv^2

=(1/2)100×4×4

800J

Answer 2

400 J

Step-by-step explanation:

Formula :

• Kinetic Energy (KE) = 1/2 x mass (m) x velocity² (v²)

Solving :

• KE = 1/2 x 100 x (4)²
• KE = 50 x 16
• KE = 400 J