grade 4 , con 4 , lesson 3

The force that occurs when an object rubs against another object is called

• friction

• gravity

• push

• pull

The force that tries to stop an object moving on a surface is called

• gravity

• friction

• push

• pull

There is a.....force between the car tires and the road that acts to decrease car's speed gradually

• gravity

• pulling

• pushing

• friction

Which of the following sentences describes the friction force?

• It pulls objects toward the ground.

• It pushes objects away from the ground.

• It slows down or stops objects in motion.

• It doesn't affect objects in motion.

When an apple falls from a tree down to the ground, it is affected by....

• friction force of air only.

• gravity pulling force only.

• gravity pushing force only.

• friction of air and gravity pulling forces.

Tamer pushes a ball on a flat ground and it covers a distance of 30 cm. If he pushes it with more force, it may cover a distance equal to ....cm.

• 5

• 15

• 30

• 50

When a car crashes into a wall it will not stop

• True

• False

Friction Force always slow down or stops the motion of moving objects

• True

• False

If the same Force acts on two different objects so the bigger object will travel for along with distance

• True

• False

When a car runs out of fuel on a flat road its speed increases gradually until it stops

• True

• False