concepts 2.1,2.2,.23

The force that slows down the object's speed is called...........................

• Push

• Gravity

• Friction

• Pull

When you sit on a chair the force of the gravity will ...................... and holding you on a chair

• pulling you upward

• Pulling you downward

• Pushing you upward

• Pushing you downward

................ is the ability to do work

• Energy

• Force

• Push

• Pull

unbalanced force causes a change in the object's position .....................

• X

When you move something toward you that represents .........................

• Pushing force

• Light energy

• Pulling force

• Sound energy

The chemical energy that stored in the batteries is considered a form of ...................

• Potential

• Kinetic

• Heat

• Light

The potential energy is depends on .....................

• it's mass only

• its height from the earth's surface

• Its mass and its height from the earth's surface

• its temperature

The energy that gained by a ball when it falls from above is ......................

• Kinetic energy

• Potential energy

• Light energy

• Chemical energy

When a roller coaster slides down fast its kinetic energy increases............................

• X

In the electric fan the kinetic energy is converted into electric energy .....................

• X