Energy

Question 1

What is the equation that links kinetic energy, mass and speed?

Answer 1

Kinetic energy= 0.5 x mass x(speed squared)

Question 2

Kinetic energy = Mass x Speed squared x____

What is the blank?

Answer 2

0.5

Question 3

Kinetic energy = Speed squared x ____ x 0.5

What is the blank?

Answer 3

Mass

Question 4

Kinetic energy = Mass x 0.5 x _____

What is the blank?

Answer 4

Speed squared

Question 5

Gravitational potential energy= mass x ?

Answer 5

? is Gravitational field strength

Question 6

What can be assume gravitational field strength is equal to?

Answer 6

10 or 9.8 Newtons

Question 7

What can we assume gravitational field strength is equal to?

Answer 7

10 or 9.8 Newtons

Question 8

What is the equation that links gravitational field strength, mass and gravitational potential energy?

Answer 8

GPE= Mass x gravitational field strength

Question 9

What is the equation that links work done, power and time taken?

Answer 9

Power = Work done/ Time taken

Question 10

What is the equation that links energy transferred, power and time taken?

Answer 10

Power = Work done/ Time taken

Question 11

Efficiency is?

Answer 11

Useful energy output/ Total energy input
or
Useful power output/ Total power input

Question 12

The unit of power is____

Answer 12

Watts

Question 13

The unit for kinetic energy is____

Answer 13

Joules

Question 14

The unit for speed is___

Answer 14

m/s or meters per second

Question 15

The unit for GPE is____

Answer 15

Joules

Question 16

Gravitational field strength unit: ____

Answer 16

N/kg