Forces and Motion Day 2

Which statement uses Newton's 3rd Law to describe a rocket launching into space?

• rockets with more mass require more force to launch

• rockets remain at rest until the force of the engine firing allows them to take off

• rockets move forward because the exhaust moves out of the back of the rocket

• rockets remain in motion as long as the engine is burning fuel

A balanced force is when

• there is no net force

• there is a lot net force

• there is a small amount of net force

• there is some net force

What is a Net Force?

• The sum of all forces that are acting on a object

• The total force multiplied together

• The total amount of force that is applied to the object

Which image is an example of an unbalanced force.

• Image 1 (top image)

• Image two (bottom image)

Which person will have an easier time getting down the hill?

• Person A , because they are experiencing less friction than person B.

• Person B, because they are experiencing more friction than person A.

Which of Newton's laws is the reasoning behind trucks cargo kept moving when the truck stopped.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

When forces on an object are balanced, the net force is...

• Zero

• Greater than zero

• Less than zero

• The total of the forces

When an unbalanced force acts on an object, the object...

• stays at rest

• accelerates

• changes its mass

• changes its weight

What will the net force on the soccer ball be?

• 50 N to the left

• 50 N to the right

• 200 N to the left

• 200 N to the right

Person on the left = 45 N

Person on the right = 32 N

What is the net force?

• zero N

• 10 N

• 77 N

• 13 N