unit 2 quiz 2

 

The energy that is stored in an object due to its position is known as…………………..

• Kinetic energy

• potential energy

• electrical energy

The main difference between pulling and pushing forces is the direction of the force.

• true

• false

as the height of an object from the Earth's surface increases its potential energy deccreases.

• true

• false

the kinetic energy of a toy car pushed on a flat surface is equal to the kinetic energy of another toy car pushed with the same force down a ramp

• true

• false

They are present in car airbags and allow them to deflate fast after collision……...........................

• Vents

• seatbelts   

• parachute

the energy that is used to operate the television........................

• electric energy           

• chemical energy

• heat energy

The force that makes an object move a distance…………….

• Friction force

•      Unbalanced forces

• gravitational force        

the potential energy of an object depends on…………

• its mass only

• its height from the Earth's surface only

• its mass and its height from the Earth's surface

• its temperature

all of the following are examples of motion except………………….

• Running person

• flying bird

• sleeping dog

• a ball traveling through the air

 

when a car suddenly stops the passengers move………………

• forward

• backward

• upward