P1 Know It

Complete this statement:

Energy cannot be...

• ...created or destroyed

• ...transferred from one place to another

• ...transferred from one store to another

• ...dissipated as heat

A person throws a ball. Energy is transferred form chemical energy in the muscles to...

• Kinetic energy

• Nuclear energy

• Thermal energy

• Light energy

What is the energy stored in moving objects?

• Gravitational Potential Energy (GPE)

• Kinetic Energy (KE)

• Elastic Potential Energy (EPE)

• Nuclear Energy

What is the energy stored in objects at height?

• Gravitational Potential Energy (GPE)

• Kinetic Energy (KE)

• Elastic Potential Energy (EPE)

• Nuclear Energy

What is the energy stored chemical bonds?

• Light Energy

• Chemical Energy

• Elastic Potential Energy (EPE)

• Nuclear Energy

What is the missing factor?

Kinetic Energy = ½ x m x _

• v

• s

• v²

• d

What are the units for mass in KE = ½mv² ?

• lb

• g

• kg

• N

What is the unit for energy?

• Watts (W)

• Metres (m)

• Joules (J)

• Amps (A)

What is the equation for gravitational potential energy?

• GPE = ½mv²

• GPE = m x h

• GPE = m x g x h

• KE = m x g x h

If a question does not say what gravitational field strength is on Earth, what can we assume it is?

• 1 N/kg

• 6 N/kg

• 10 N/kg

• 23 N/kg