Ch 2 Physical Science Test Review

What will happen to an object at rest if an UNBALANCED forces acts on it?

• It will move.

• It will stay at rest.

Tags

NGSS.MS-PS2-2

What is the centripetal force that keeps the moon in orbit?

• gravity

• inertia

• winds

• circular motion

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Using the formula, p= mxv, what is the momentum of a 6 kg ball rolling at 3.0 m/s?

• 18 kg m/s

• 2 kg m/s

• 9 kg m/s

• 180 kg m/s

Tags

NGSS.HS-PS2-2

In this type of collision, the objects collide and bounce off each other.

• inelastic

• inertia

• elastic

• plastic-man

Tags

NGSS.MS-PS2-1

In this type of collision, the objects collide and stick together.

• elastic

• inelastic

According to Newton's THIRD Law of Motion: For every action there is an ___________ and OPPOSITE reaction.

• unequal

• different

• equal

Tags

NGSS.MS-PS2-1

According to Newton's FIRST Law of Motion, if the net force on an object is zero, the motion of the object

• changes

• only changes sometimes

• does not change

All of the following are ways to REDUCE friction EXCEPT:

• increase surface area

• decrease surface area

• add a lubricant

All of the following are causes of friction EXCEPT:

• lubricant

• microscopic dips and bump

• attraction of electrical charges

Forces acting on an object cannot be added.

• True

• False

Tags

NGSS.MS-PS2-2