Unit 4- Force and Motion

Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?

• Frictional forces oppose the motion of the car.

• Forward motion slowly runs out as energy is expended.

• The natural state of an object is to be at rest.

• Inertia acting on an object will dissipate.

This is a graph of the motion of a small boat traveling at a constant speed. How far will the boat travel in 10 hours?

• 10 km

• 15 km

• 25 km

• 30 km

6.8C- Which two measurements are needed to determine the speed of an object?

• Position and time

• Distance and time

• Position and direction

• Distance and direction

6.8B- A box and forces are shown below. A box rests motionless on the ground. One student is pushing the box to the right with a force of 2 Newtons. The other student is pushing to the left with a force of 5 Newtons. In which direction and with what type of speed will the box move?

• It will move left at 3 N.

• It will move to the right at 3 N.

• It will move to the left at 7 N.

• It will not move.

Which measurements are necessary for determining both the speed and velocity of a moving object?

• Distance, time, and direction

• Direction, displacement, and distance

• Distance, direction, and acceleration

• Direction, time, and acceleration

A measurement of distance over time

• speed

• acceleration

• force

• distance

The measurement of speed and direction of an object

• speed

• velocity

• acceleration

• average speed

a change in an objects speed or direction

• speed

• velocity

• acceleration

• motion

What is force?

• a push or a pull

• motion

• acceleration

• interaction

What units is Force measured in?

• Grams

• Miles

• Hours

• Newtons