PS Ch12 Review

What does the unit Newton tell us?

• Velocity
• Force
• Mass
• Acceleration

Any change in motion must be initiated by a ______ force.

• push
• unbalanced

• field

• balanced

Tags

NGSS.MS-PS2-2

An astronaut on the moon has less weight than on earth.

• idk

• Depends

• false

• True

Dynamics is the branch of physics that

• explains the motion of objects and the forces that cause the motion
• investigates the structure of atoms
• analyzes chemical reactions
• studies the behavior of light

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Objects in motion experiencing a zero net force will continue in motion.

• False
• Maybe
• Sometimes
• True

Centripetal force is what type of force?

• Centripetal force is a frictional force.
• Centripetal force is a gravitational force.
• Centripetal force is a repelling force.
• Centripetal force is a contact force ONLY

What is the strongest of the fundamental forces?

• Weak nuclear force
• Electromagnetic force
• Gravitational force
• Strong nuclear force

An object in motion slows down

• The object gains more kinetic energy as it slows down
• The object maintains a constant speed regardless of external forces
• The object speeds up due to external forces
• When the net force acts opposite the direction of motion

Tags

NGSS.MS-PS2-2

The direction of friction ______ the direction of motion.

• enhances
• ignores
• opposes
• supports

Tossing a ball results in a field force.

• True
• Maybe
• False
• Sometimes

Tags

NGSS.MS-PS2-5