Understanding Forces and Motion

What is the basic definition of a force as introduced in the video?

• A force is a push or a pull.

• A force is a type of energy.

• A force is a form of matter.

• A force is a type of motion.

What happens when air is added to a balloon, according to the demonstration?

• The balloon becomes heavier.

• The air inside the balloon exerts a force.

• The balloon changes color.

• The air inside the balloon disappears.

How do jet engines move a jet forward?

• By using magnets to repel the Earth.

• By using wings to push against the air.

• By taking in air and forcing it out with pressure.

• By using wheels to roll on the ground.

In the balloon experiment, what causes the balloon to move forward?

• The balloon is moved by a fan.

• The balloon is pulled by gravity.

• The balloon is pushed by the table.

• The air inside the balloon pushes against the air outside.

What is the main takeaway about forces from the video?

• Forces are not important in science.

• Forces can be a push or a pull, and air can exert force.

• Forces are only present in solid objects.

• Forces can only be created by humans.