APS Semester Test Study Guide

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

• force
• mass
• friction
• age

Tags

NGSS.MS-PS2-2

Which of these is measured in newtons (N)?

• acceleration
• mass
• momentum
• friction

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

• friction
• inertia
• gravity
• spring

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-PS2-2

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

Which of the following is NOT an example of unbalanced forces acting on an object?

• An acorn falling from a tree, accelerating
• A car moving straight at 80 km/h
• A car changing speed from 50 km/h to 80 km/h
• A truck slowing down as it approaches a stop sign

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

Tags

NGSS.MS-PS2-2

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