Question

If a 4 kg object is moving 5 m/s, how much kinetic energy does it have?

Answer 1

Answer:

K.E = 50 J  

Explanation:

Given data:

Mass of object = 4 Kg

Speed of object = 5 m/s

K.E = ?

Solution:

Formula:

K.E = 1/2mv²

by putting values,

K.E = 1/2 × 4 Kg × ( 5m/s)²

K.E = 1/2 × 4 Kg ×25 m²/s²

K.E = 50 J   (Kgm²/s² = J)