1. Energy (kinetic, gravitational, elastic equations & specific heat capacity)

Question 1

What is the equation for kinetic energy?

Answer 1

Question 2

What is velocity (speed) measured in, in physics?

Answer 2

M/s

Question 3

What is mass always measured in, in physics?

Answer 3

Kilograms (kg)

Question 4

What is energy measured in?

Answer 4

Joules

Question 5

What has energy in its kinetic energy store?

Answer 5

Anything that is moving has energy in its kinetic energy store

Question 6

When is energy transferred to and from the kinetic energy store?

Answer 6

• When an object speeds up energy is transferred to this store
• When an object slows down energy is transferred away from this store

Question 7

What is the equation for Gravitational potential energy?

Answer 7

G.P.E = mgh

Question 8

What happens the higher an object is lifted?

Answer 8

more energy is transferred to the object’s Gravitational potential energy store

Question 9

What happens when an object falls?

Answer 9

Energy from its gravitational potential energy store is transferred to its kinetic energy store

Question 10

What is the spring constant (k) measured in?

Answer 10

N/m

Question 11

What is extension measured in, in physics?

Answer 11

Metres

Question 12

What is the equation for elastic potential energy?

Answer 12

Question 13

What can stretching or squashing an object do?

Answer 13

It can transfer energy to its elastic potential energy store

Question 14

What is specific heat capacity?

Answer 14

The energy required to raise the temperature of 1kg of a substance by 1 degrees celsius

Question 15

What is c?

Answer 15

Specific heat capacity

Question 16

What is the equation for specific heat capacity?

Answer 16

Question 17

What are the units for specific heat capacity?

Answer 17

J/kg degrees celcius