Forces & Newton's Laws Review

My dog and I were playing tug-of-war. We were both pulling with equal force and the rope was not moving. This is:

• unbalanced forces

• balanced forces

• acceleration

• displacement

A gardener feels the hose pushing backwards on her as she waters the garden. What is the most likely cause of this?

• The hose is very elastic

• Since the hose is in motion it tends to stay in motion

• The force exerted on the water equals the mass of the water times its acceleration

• The escaping water exerts an equal and opposite force on the hose

Which of the following is measured in Newtons? (Hint-2 answers!)

• weight

• momentum

• mass

• acceleration

• force

The upward force on an object falling through the air

• air resistance

• momentum

• inertia

• gravity

Which of Newton's laws explains the relationship between mass, force and acceleration?`

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

• Law of Universal Gravitation

If I pull a lab cart with more force, the lab cart will have more _______.

• acceleration

• inertia

• gravity

• size

The size of the gravitational force between two objects depends on their ______.

• frictional forces

• inertia

• masses and the distance between the objects

• speed and direction

You travel to Jupiter where your weight (not mass) is double that of Earth. Why?

• Jupiter has less gravity than Earth

• Jupiter has the same gravity as Earth

• Jupiter has more gravity than Earth

• Gravity does not affect weight.

To every action there is an equal and opposite reaction

• Law of Conservation of Momentum

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

Which formula do you use for force?

• F = ma

• P = mv

• a = (vf - vi)/t

• s = d/t