A 50-kilogram student is running and has 225 joules of kinetic energy. What is the students speed in meters per second

Answer:3m/s

Explanation:

mass (m) = 50kg

Kinetic energy = 225 joules

Kinetic energy = (m x (velocity) ^2) / 2

225 = (50 x (velocity) ^2) / 2

Cross multiplying we get

225x2=50x (velocity) ^2

450=50x (velocity) ^2

Divide both sides by 50

450/50 = (50x (velocity) ^2) / 50

9 = (velocity) ^2

Taking the square root of both sides we get

√9=velocity

3=velocity

Velocity=3m/s