"Kinetic Energy"

Question 1

What is Kinetic Energy?

Answer 1

The energy stored in moving objects

Question 2

What is Kinetic Energy Formula?

Answer 2

0.5 x m x v^2

Question 3

What is stored in a Car and what?

Answer 3

Chemical energy stored in petrol

Question 4

How is chemical energy stored in petrol turned into Kinetic energy stores?

Answer 4

As the Car moves

Question 5

Question : A car with a mass of 700 kg is moving with a speed of 20 m/s. Calculate the kinetic energy of the car with this formula 0.5 x m x v^2

Answer 5

0.5 x 700 x 20^2
= 140,000 J
140 000 / 1000
=140 kJ

Question 6

A cyclist and bike have a total mass of 100 kg and a speed of 15 m/s .Calculate the kinetic energy of the car with this formula 0.5 x m x v^2

Answer 6

0.5 x 100 x 15^2
= 11250 J
11 250/1000 kJ
= 11.25 kJ

Question 7

Formula for mass

Answer 7

E/0.5 x v^2

Question 8

A tennis ball is travelling at 50m/s and has a kinetic energy of 75 J. Calculate the kinetic energy of the car with this formula E/0.5 x v^2

Answer 8

75/0.5 x 50^2
= 0.06 kg