Pre-Final Exam

The amount of inertia an object has depends on its _____.

• force

• mass

• friction

• age

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

_____ is the force that opposes the sliding motion of two surfaces that are touching each other.

• friction

• inertia

• gravity

• spring

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A group of students are playing tug-of-war. The students on both sides pull with equal force. This is an example of:

• unbalanced forces

• balanced forces

• acceleration

• displacement

The sum of all the forces acting on an object is called the _____ force.

• net

• gravitational

• final

• inertial

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If the same force is applied to each of these balls, which one will have the SMALLEST acceleration?

• a
• b
• c
• d

Tags

NGSS.MS-PS2-2

A person in a head-on car collision, who is not wearing a seatbelt, continues to move forward at the original speed of the car because of ____________.

• friction

• inertia

• gravity

• weight

A feather will fall through the air more slowly than a brick because of _____ acting on it.

• gravity

• air resistance

• terminal velocity

• momentum

The firefighter feels the hose pushing backwards on his hands. What is the most likely cause of this?

• The escaping water exerts an equal and opposite force on the hose

• Since the hose is at rest, it tends to stay at rest

• The force on the water equals the mass of the water times its acceleration

• The hose is very elastic

Tags

NGSS.MS-PS2-1

The force that pulls all objects towards the Earth is

• friction

• gravity

• magnetic

• electrical

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The force that pushes objects up when they are on a solid surface

• normal

• tension

• friction

• applied