Pre-Assessment Unit 7 Forces and Motion

Which is true from Newton's Third law of motion?

• For every action force there is a smaller reaction force in the opposite direction.
• For every action force there is an equivalent reaction force in the opposite direction.
•  Both 1 and 2
• None of the above

What is Newtons 2nd law?

• equal&opposite force
• law inertia
• f=ma

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

• 0

• 5

• 10

• 21

______________ measures an object's tendency to resist changing its motion.

• Acceleration

• Inertia

• Gravity

• Weight

What is the net force

• 10 N
• 0 N
• 25 N
• 1 N

A _____ is a pull or a push.

• force
• friction
• gravity
• speed

A car traveled 120 km in 2 hours. Using this data, you can calculate its _____.

• speed.
• velocity.
• position.
• mass.

According to Newton, what kinds of objects are affected by gravity?

• Only objects inside the earth's atmosphere, like apples.

• Only objects that orbit the sun, like planets.

• Only objects with a lot of mass, like human beings.

• All objects in the universe.

The direction and speed of an object is described by it...

• velocity

• displacement

• speed

• force

If an object is not moving the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!