Forces Review Questions

An object’s position

• describes an objects exact location on a map.

• is only used to describe the motion of a car on the road.

• is usually described using centimeters as a unit of length.

• is its current distance and direction from a reference point.

The net force on an object is found by

• adding the forces.

• dividing the forces.

• subtracting the forces.

• multiplying the forces.

Tags

NGSS.MS-PS2-2

The red car is six car lengths behind the black car. In this scenario, the black car is called a(n) _______.

• reference point

• destination

• starting point

• observer

The net force of forces 15 N and 30 N is ______.

• 45 N

• 30 N

• 15 N

• 0 N

Tags

NGSS.MS-PS2-2

For forces acting in opposite directions, the net force is found by

• adding the forces.

• dividing the forces.

• subtracting the forces.

• multiplying the forces.

Tags

NGSS.MS-PS2-2

The four scientific laws that Newton developed related to

• gravity and speed

• gravity and magnetism

• acceleration and the planets

• gravity and forces and motion

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

NGSS.MS-PS2-4

Brakes acting on a train car is an example of

• the net force on an object being positive.

• the net force on an object slowly increasing.

• the net force an object remaining the same over time.

• the net force on an object being equal to one force on the object.

Tags

NGSS.MS-PS2-2

Which of these is an example of rate?

• a car traveling 10 km

• a person eating 5 sandwiches

• a person running 2 km in 10 minutes

• two cars arriving at a location ten minutes apart

Finding the net force on an object is useful because

• you can predict the direction of an object.

• you can predict the next force that will act on an object.

• it allows you to predict whether an object’s motion will change.

• you can tell how the forces acting on an object have changed over time.

Tags

NGSS.MS-PS2-2

Speed is a rate that describes

• the distance an object moves over time.

• an object’s changes in direction over time.

• the difference in distance between two objects.

• the distance and direction in which an object moves.

Tags

NGSS.MS-PS3-1