Forces

_______ force must act on an object for it to CHANGE it's motion

• balanced

• unbalanced

• gravitational

• electrical

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

• balanced

• unbalanced

Tags

NGSS.MS-PS2-2

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

In which direction does friction act towards an object

• Same

• opposite

• parallel

• perpendicular

Newton's 3rd Law states that for ever action there is an equal and opposite ________.

• reaction

• satisfaction

• fraction

• transaction

Tags

NGSS.MS-PS2-1

What will be the effect on the boy in the picture if the driver stops quickly?

• Because of inertia he will remain in the same position.

• He will be pushed back into the car seat.

• He will move from one side of the car seat to the other.

• Because of inertia he will move forward pressing against the seatbelt.

Sitting at the top of a steep hill on a roller coaster (not moving), is an example of:

• Acceleration

• Inertia

• Speed

• Velocity

Which statement indicates that motion has occurred?

• The reference point has changed.

• The position the object has changed.

• The object being described has changed.

• The object is stationary.

An object is in motion if it moves relative to a

• speed

• inertia

• direction

• reference point

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction