Ps.1.2

30 mph west is an example of _________.

• force

• speed

• acceleration

• velocity

A rollercoaster heading down a hill is _____________.

• at rest

• slowing down

• accelerating

• velocity

Newton's 3rd Law states that for ever action there is an equal and opposite ________.

• reaction

• satisfaction

• fraction

• transaction

A ______ is a push or pull on an object.

• force

• speed

• acceleration

• velocity

A force that causes an object to slow down when it touches another object is _________.

• gravity

• friction

• inertia

• Newton

if an object stays still or continues moving at the same speed and in the same direction, it is a _______ force.

• weak

• strong

• balanced

• unbalanced

Net force is a combination of all ________ acting on an object.

• forces

• speeds

• accelerations

• velocities

The picture represents the effect of tension on the earth’s crust. Faults and rift valleys are the result of movement in

the crust. What type of force causes these movements in the plates?

• Balanced forces

• Unbalanced forces

• Inertia

• Friction

What is the net force and the direction of movement?

• 50 Newtons, Left
• 50 Newtons, Right
• 500 Newtons, RIght
• 450 Newtons, LEft

What is Newtons 1st law of motion?

• Force= Mass multiplied by acceleration 
• An object at rest stays at rest unless acted on an unbalanced force. (inertia)
• For every action there is a equal and opposite  re-action.
• law of gravity