Accel: Unit 2: Force and Motion

What does gravitational force depend on?

• mass

• friction

• shape

• speed

Tags

NGSS.MS-PS2-4

Two forces acting on an object are modeled in the diagram below. Which best describes the forces modeled by the diagram?

• The forces are balanced, the net force is 0

• The forces are unbalanced, the net force is 10 N up

• The forces are unbalanced; the net force is 7 N upward

• The forces are balanced; the net force is 10 N downward

Tags

NGSS.MS-PS2-2

A hockey puck coming to a stop on a driveway after instead of going into a goal.

• contact force

• applied force

• normal force

• balanced force

Tags

NGSS.MS-PS2-2

A helicopter uses Newton’s Third Law to fly. As the propeller spins, air is pushed​ (a)   causing the helicopter to lift​ (b)  

• downward
• upward.

Calculate the Net Force. 

• 60N, Left 
• 40N, Right 
• 0N
• 60N, Right

Tags

NGSS.MS-PS2-2

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Tags

NGSS.MS-PS2-2

To calculate net force you must-

• Add the forces
• Subtract the forces

Tags

NGSS.MS-PS2-2

Which of the following is the best example of friction?

• A vase of flowers sitting on a table.

• A bike tire being squeezed by a brake.

• An apple falling to the ground from a tree.

• A hockey puck traveling towards a goal on ice at a constant speed 

What is Newton's First Law known as? The Law of

• Friction
• Mass
• Inertia
• Gravity

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

• slowing motion in a straight line
• accelerating motion in a straight line
• constant motion in a straight line
• constant motion in an unpredictable direction