Question

A car and a truck are moving with the same velocity of 60 km/h .which one has more kinetic energy

Answer 1

Truck has more KE because of its larger mass than the car.
KE= 1/2*m*v²
If v is same then we see that the mass of a truck is more than the mass of a car.

Answer 2

Kinetic energy of Truck > Kinetic Energy of Car

Step-by-step explanation:

Given,

Velocity of car and truck is same,i.e 60 km/h

We know that,

$\bold {Mass\ of\ truck(m_1) > Mass\ of\ car(m_2)}$

$Kinetic\ Energy = \frac{1}{2}mv^2$

Since velocity is same but masses are different

$Kinetic\ Energy\ of\ truck = \frac{1}{2}m_1v^2$

$Kinetic\ Energy\of\ car = \frac{1}{2}m_2v^2$

Hence,Kinetic energy of Truck > Kinetic Energy of Car