Question

Self-Check

por Learning
A truck mass 8000 kg and a car a mass 1000
kg are travelling at the same velocity. Which one has greater kinetic energy ? Why?​

Answer 1

K.E of truck > K.E of car

Step-by-step explanation:

Mass of the truck = 8000Kg

K.E=
`(1)/(2) mv`

K.E =
`(1)/(2)*8000*v\\ 4000v`

Mass of the car = 1000 Kg

K.E of the car =
`(1)/(2)*1000*v\\ 500v`

Therefore Kinetic energy of the truck is greater than that of the car