KE & GPE

Question 1

What is Kinetic energy?

Answer 1

The energy an object has because it it moving

Question 2

What is the calculation for kinetic energy?

Answer 2

Ke = 1/2 x Mass x Velocity (squared)
Ke = 1/2 MV (squared)

Mass is measured in Kilograms - kg
Velocity is measured in metres per second - m/s
Kinetic Energy is measured in joules - J

Question 3

Rearrange the kinetic theory equation for mass and velocity

Answer 3

Can’t really write here, look in book

Question 4

What does the GPE of an object depend on?

Answer 4

Mass, height and gravitational field strength

Question 5

As a bungee jumper falls would he gain or lose GPE?

Answer 5

lose

Question 6

As the elastic cord of a bungee jumper pulls him back up after he jumped would he he lose or gain GPE?

Answer 6

Gain

Question 7

What is the equation for GPE

Answer 7

Gravitational Potential Energy = Mass X Gravitational Field Strength X Height
GPE= MGH

Mass is measured in kilograms - kg

Gravitational Field Strength is measured in Newton’s per kilogram (N/kg), usually taken as 10N/kg on Earth

Height is measured in Metres - m

GPE is measured in joules - J