Basics of speed

When the speed of a moving object increases, the energy that transfers during its collision will ...............................

• increase

• decrease

• not change

• equal zero

A fast-moving object has .......................that of slow-moving object.

• the same energy as

• more energy than

• less energy than

• no energy as

The two factors affecting the kinetic energy of an object are ...........................

• its speed and the color

• its mass and the color

• its speed and the mass

• its light and the sound energies

On collision, energy is .......................

• created

• destroyed

• transferred and change

• created and transferred

When car and truck collide with each other in opposite directions, ............................

• the car has more energy and cause more damage

• the truck has more energy and cause more damage

• the car has less energy and cause more damage

• the truck has less energy and cause less damage

All the following factors affect the kinetic energy of a moving car, except .............................

• the mass of the car

• the pushing force of the car engine

• the airbags inside the car

• the inclination of the road on which the car moves

The mass of an object ........................

• doesn't affect its potential energy or its kinetic energy

• affects its potential energy and kinetic energy

• affects its potential energy only

• affects its kinetic energy only

The measuring units of distance are

• second and meter

• hour and kilometer

• hour and second

• kilometer and meter

................... and ..................... are the main factors that we need to calculate the speed of an object.

• time - kinetic energy

• distance - kinetic energy

• time - time

• potential energy - kinetic energy

How can we calculate the speed of an object?

• speed= distance / time

• speed= distance x time

• speed= distance + time

• speed= distance - time