Newton's Laws

When a car is moving at 20 mph, everything in the car is

• not moving

• moving a little slower than 20 mph

• moving at 20 mph

• moving faster than 20 mph

Imagine a car is driving at 20 mph and then has to brake suddenly. What happens to the people inside the car, if no one is wearing a seatbelt??

• they continue to move forward until they hit something

• they accelerate forwards until they hit something

• they move backwards

• they do not move at all

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

An object's forward motion will continue unless a ___________________ force acts on it.

• balanced

• unbalanced

• backwards

• forwards

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NGSS.HS-PS2-1

When a car brakes to a stop, what kind of force do the seatbelts provide in order to protect the people inside the car?

• unbalanced force

• balanced force

• a sum of forces equal to 0

• no force

Tags

NGSS.MS-PS2-2

Imagine a car has mattresses on the top of it that are NOT tied to the car and the car stops (brakes) very quickly. What happens to the mattresses?

• they stay on top of the car because they are not moving

• they continue moving forward at the same speed the car was moving before it braked.

• they move in the opposite direction that the car was moving before it braked.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Newton's First Law of Motion states that an object in motion...

• will stop moving if a balanced force acts on it

• will continue to move if any unbalanced force acts on it in any direction

• will stop moving if an unbalanced force acts on it toward the opposite direction of its movement

Newton's First Law of Motion states that an object at rest...

• will stay at rest when an unbalanced force acts on it

• will start to move if an balanced force acts on it

• will stay at rest when a balanced force acts on it

An object in motion still in motion unless acted upon by an unbalanced force. Why does the rock on the table STOP moving after Moby pushes it?

• friction by the table provides a balanced force in the SAME direction of the rock's movement

• friction by the table provides a balanced force in the OPPOSITE direction of the rock's movement

• friction by the table provides an unbalanced force in the SAME direction of the rock's movement

• friction by the table provides an unbalanced force in the OPPOSITE direction of the rock's movement

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The image shows that friction always acts in the ___________________ direction of the motion of the object.

• same

• opposite

• none of the answers are correct

What will happen if you're driving in a car and the driver brakes (stops) very quickly?

• you will stop moving

• you will continue moving forward

• you will slow down very slowly

• you will speed up

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5