Science Danica Physics

Which of the following refers to the force that pulls object toward each other?

• friction

• gravity

• mass

• weight

Which of the following unit is used to express weight?

• kg

• m

• N

• km/h

The following can reduce friction EXCEPT _____________

• grease

• oil

• sand

• water

Which of the following will be directly affected if you travel from Earth to the moon?

• air resistance

• friction

• mass

• weight

Which of the following energy is present in a moving object?

• chemical energy

• kinetic energy

• nuclear energy

• potential energy

A force that slows or stops motion when objects rub together.

• Friction
• Push
• Pull
• Magnetism

A measure of how fast something moves over a certain distance is ________________.

• motion
• speed
• work
• force

Effects of force

• –move objects at rest

• slow down, speed up, or stop a moving

  object

• change direction or shape of the object

• makes the object stay

1 N = ????

• 
• 9.8 m/s

Newton is named after the English scientist and mathematician.

• Sir Isaac Newton

• Sir Isiah Newton