S2: Energy

1

The law of conservation of energy states that energy cannot be created or destoyed, however, it can be transferred from one form into another.

1

All objects that are at the same height above sea level will have the same gravitaional potential energy.

1

All moving objects have some kinetic energy. The amount of kinetic energy that the object has only depends on its mass and its speed.

1

A battery has stored electrical energy.

1

Joules and calories are both units of energy.

2

From the list below, which are forms of energy given out (emitted) by a battery powered torch? You can choose more than one selection.

1

Calculate the work done against gravity when a 400g mass is lifted a vertical distance of 2.5m, at a steady speed. Take g to equal 10 N/kg.

2

A 2 kg object is dropped from rest at a height of 4m. What will the speed of the object be at the point of impact to the ground? Take g to equal 10 N/kg.

2

A book resting on a table has some energy. Which of the following forms of energy does the book have? You can select more than one option.

1

A person pushes a car for 30m along a flat road at a steady speed of 3 m/s. If the frictional forces acting on the car are equal to 500N, how much work did the person do in pushing the car?

1

If a light bulb has a power rating of 100W, that means that:

1

An electrical heater has a power rating of 1200 W. How much heat energy is given out by the heater in 5 minutes?

1

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will hit the floor ar the same speed.

1

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will have the same kinetic energy as they hit the floor.

1

S2: Energy

The law of conservation of energy states that energy cannot be created or destoyed, however, it can be transferred from one form into another.

All objects that are at the same height above sea level will have the same gravitaional potential energy.

All moving objects have some kinetic energy. The amount of kinetic energy that the object has only depends on its mass and its speed.

A battery has stored electrical energy.

Joules and calories are both units of energy.

From the list below, which are forms of energy given out (emitted) by a battery powered torch? You can choose more than one selection.

Calculate the work done against gravity when a 400g mass is lifted a vertical distance of 2.5m, at a steady speed. Take g to equal 10 N/kg.

A 2 kg object is dropped from rest at a height of 4m. What will the speed of the object be at the point of impact to the ground? Take g to equal 10 N/kg.

A book resting on a table has some energy. Which of the following forms of energy does the book have? You can select more than one option.

A person pushes a car for 30m along a flat road at a steady speed of 3 m/s. If the frictional forces acting on the car are equal to 500N, how much work did the person do in pushing the car?

If a light bulb has a power rating of 100W, that means that:

An electrical heater has a power rating of 1200 W. How much heat energy is given out by the heater in 5 minutes?

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will hit the floor ar the same speed.

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will have the same kinetic energy as they hit the floor.

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will hit the floor at the same time.

The law of conservation of energy states that energy cannot be created or destoyed, however, it can be transferred from one form into another.

All objects that are at the same height above sea level will have the same gravitaional potential energy.

All moving objects have some kinetic energy. The amount of kinetic energy that the object has only depends on its mass and its speed.

A battery has stored electrical energy.

Joules and calories are both units of energy.

From the list below, which are forms of energy given out (emitted) by a battery powered torch? You can choose more than one selection.

Calculate the work done against gravity when a 400g mass is lifted a vertical distance of 2.5m, at a steady speed. Take g to equal 10 N/kg.

A 2 kg object is dropped from rest at a height of 4m. What will the speed of the object be at the point of impact to the ground? Take g to equal 10 N/kg.

A book resting on a table has some energy. Which of the following forms of energy does the book have? You can select more than one option.

A person pushes a car for 30m along a flat road at a steady speed of 3 m/s. If the frictional forces acting on the car are equal to 500N, how much work did the person do in pushing the car?

If a light bulb has a power rating of 100W, that means that:

An electrical heater has a power rating of 1200 W. How much heat energy is given out by the heater in 5 minutes?

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will hit the floor ar the same speed.

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will have the same kinetic energy as they hit the floor.

Ignoring air resistance, if a 1 kg mass and a 5 kg mass are dropped from the same height, both masses will hit the floor at the same time.