Newton's Laws and Forces

If the net force is equal to zero, the forces acting on the object are

• balanced

• unbalanced

Tags

NGSS.HS-PS2-1

What is the net force?

• 5000 N right

• 4000 N right

• 40 N left

• 4000 N left

Tags

NGSS.MS-PS2-2

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

• forces

• speeds

• accelerations

• velocities

Tags

NGSS.MS-PS2-2

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?

• The car with the smaller mass will require less forces to stop than the car with the larger mass.

• The car with the larger mass will amintain its velocity while traveling down the hill.

• The car with the smaller mass will take longer to stop than the car with the larger mass.

• The car with the larger mass will have less inertia than the car with the smaller mass.

Tags

NGSS.MS-PS2-2

The magnitude of the friction force depends on the force pushing the surfaces together.

• True

• False

Tags

NGSS.MS-PS2-2

If you travel to Mars, where gravity is 38% of Earth's gravity, what will happen to your mass and weight?

• Your mass and weight will both be greater than on Earth.

• Your mass and weight will both be less than on Earth.

• Your mass will be the same, but your weight will be less than on Earth.

• Your mass will be less than on Earth, but your weight will be the same.

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

Tags

NGSS.MS-PS2-1

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal and opposite reaction.

• Every mass exerts a force on every other mass.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

Tags

NGSS.MS-PS2-1

A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1

• Cart 2

• Cart 3 

• Cart 4

Tags

NGSS.MS-PS2-2

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

• 2nd law

• 1st law

• 3rd law