Contact and non-contact forces

A force is a

• push only

• pull only

• push or a pull

• push or an upthrust

Tags

NGSS.MS-PS2-1

true/false:

A force can speed an object up or slow it down

• True

• False

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

true/false:

A force can change an object's direction or shape

• True

• False

Tags

NGSS.MS-PS2-2

A stationary (not moving) object sitting on a desk has

• no forces acting on it

• balanced forces acting on it

• upthrust from gravity

• downthrust from the normal force

Tags

NGSS.MS-PS2-4

Forces are measured in

• Newtons

• Einsteins

• Galileo's

• Hawkings

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Select the two types of forces.

• contact

• non-contact

• non-touching

• touching

Tags

NGSS.MS-PS2-5

A person pushes a chair but doesn't move the chair, therefore no force has been applied.

• True

• False

Tags

NGSS.MS-PS2-2

A force that opposes motion and allows us to walk or slow down on a bicycle is call

• Gravity

• Contact force

• Friction

• Normal force

A non-contact force that pulls objects down to the Earth is called

• friction

• contact

• normal

• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

When we stand on a surface, the force of gravity is opposed by the reaction force, also known as the

• force awakens

• normal force

• a new hope

• reactionary force