You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VII

Physics

Energy

Two toy-cars ...

Question

Two toy-cars A and B of masses 200 g and 500 g respectively are moving with the same speed. Which of the two has greater kinetic energy ?

Open in App

Solution

Kinetic energy = 0.5mv²

For same speed
Kinetic energy ∝ Mass

∴ Massive object (500 g) will have greater kinetic energy.

Suggest Corrections

Similar questions

Q. A bus and a car moving at the same speed. Which of the two has a greater kinetic energy?

Q. Two cars

A

and

B

are moving on a straight road. The car

A

is moving with speed

60

miles per hour while the car

B

is moving with speed

30

miles per hour. Given that mass of both cars are same. The ratio of the

A

car's kinetic energy to the

B

car's kinetic energy is:

Q. Two cars

A

and

B

have masses

m_{A}

and

m_{B}

respectively, with

m_{A} > m_{B}

. Both the cars are moving in the same direction with equal kinetic energy. If equal braking force is applied on both, then before coming to rest.

Two children are moving on two skateboards at the same speed, child A has a mass of 20 kg whereas child B has 30 kg mass. Which child has higher kinetic energy?

Two bodies A and B of masses 10kg and 20kg respectively are at the same height above the ground. Which of the two has greater potential energy ?

Join BYJU'S Learning Program

Two toy-cars A and B of masses 200 g and 500 g respectively are moving with the same speed. Which of the two has greater kinetic energy ?

Kinetic energy = 0.5mv² For same speed Kinetic energy ∝ Mass ∴ Massive object (500 g) will have greater kinetic energy.

Kinetic energy = 0.5mv²

For same speed
Kinetic energy ∝ Mass

∴ Massive object (500 g) will have greater kinetic energy.