EFM Check in 1

Friction is a force that acts 

• in the same direction as the motion

• opposite to the direction of the motion

• opposite to the applied forces

• the same direction as the applied force

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____ of force.

• 20N

• 40N

• 10N

• 70N

What unit do we measure force in?

• Newtons

• Joules

• Force

• Don't know

In a tug of war at a community sports event, the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the net force?

• 50N to the left.

• 350N to the left.

• 350N to the right.

• 50N to the right.

When pushing a heavy box across the floor, what is the force that makes it difficult to move?

• velocity

• friction

• inertia

• position

During which interval is the car speeding up?

• A to B

• B to C

• D to E

• E to F

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

The amount of matter within an object.

• Weight

• Mass

• Atomic Number

• Density

For every action there is an equal and opposite reaction.

• Law 1

• Law 2

• Law 3

• This is not true

As the mass of two objects increases, gravity...

• Decreases

• Increases

• Stays the same