e-PreTest: Unit 4 Force and the Laws of Motion

Which of the following shows the direction of the friction force?

• A
• B
• C
• D

Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?

• Newton's 1st Law
• Newton's 2nd Law 
• Newton's 3rd Law 
• Newton's Law of Biology

In the vector diagram shown, the Normal Force always acts _____ to the surface of contact between the object and the surface.

The person credited with developing the Three(3) Laws of Motion is _____.

• Galileo, G.

• Newton, I.

• Copernicus, N.

• Kepler, J.

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

What does it mean if acceleration is directly proportional to force as shown in the graph below? It means as the net force acting upon the object increases, the _____.

Tags

112.31

112.44.c.5

112.44.c.5.B

Another name for the Second Law of Motion is the: _____.

• Law Action and Reaction

• Law of Inertia

• Law of Acceleration

• Law of Universal Gravitation

Tags

112.31

112.44.c.5

112.44.c.5.B

Force is a vector quantity because it has _____.

Tags

112.31

112.44.c.5

112.44.c.5.B

Every object will remain at rest, or will continue to move in a straight line with a constant speed, unless the object _____.

• has a normal force pushing it upward

• has a gravitational force pulling it downward

• is acted upon by a balanced force

• is acted upon by a net force

Tags

112.31

112.44.c.5

112.44.c.5.B

The resultant force shown in the image, as a result of the two acting perpendicular forces, has a _____ direction.

Tags

112.31

112.44.c.5

112.44.c.5.B