Forces and Motion

What is the term : any push or pull that can cause an object to start moving or change its motion?

• Acceleration

• Gravity

• Force

• Friction

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NGSS.MS-PS2-2

Why does a feather falls slower than a pencil.

• Acceleration

• Gravity

• Air resistance

• Friction

.......................................... depends on:

1- Amount of force that act on the object

2- Weight of the object:

• Acceleration

• Gravity

• Force

• Friction

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NGSS.MS-PS2-2

Examples of Noncontact forces

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NGSS.MS-PS2-3

A force between surfaces that slows or stops objects from moving

• Acceleration

• Gravity

• Force

• Friction

Which factors affect the pull of gravity between objects?

• Mass and distance between objects

• Shape and size

• Weight and mass

• Temperature and color

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What term is used to describe forces that act on an object without changing its motion?

• Balanced forces

• Unbalanced forces

• Contact forces

• Noncontact forces

What cause your body to move forward when the car stopped suddenly?

• Friction

• Inertia

• Unbalanced forces:

• Gravity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

............................. is the tendency of an object in motion to stay in motion or of an object at rest to stay at rest.

• Friction

• Inertia

• Balanced forces

• Gravity

When you skate in a straight line at the same speed, the acceleration will be

• more

• less

• zero