Review Part 2: Physics First Final exam

Identify the correct unit for Acceleration

• m/s
• m/s²
• N
• Pa

Identify the correct unit for Speed

• m/s
• m/s²
• N
• Pa

Identify the correct unit for pressure

• m/s
• m/s²
• N
• Pa

Identify the correct unit for force

• m/s
• m/s²
• N
• Pa

Which of Newton's laws can be stated as “Forces occur in pairs”?

• First Law of motion
• Second Law of Motion
• Third Law of Motion
• Law of Motion

A player catches a ball.  Consider the action force to be the impact of the ball against the player’s glove.  What is the reaction to this force?

• The muscular effort int he player’s arms.
• The force the glove exerts on the ball.
• Friction of the ground against the player’s shoes.
• The player’s grip on the glove.

According to Newton's third law, if you push gently on something, it will push

• gently on something else
• on you only if your aren't moving
• gently on you
• on something only under the right conditions

The equation that correctly expresses Newton’s second law is:

• force = mass / acceleration
•  force = mass x acceleration
• force = mass + acceleration.
• force = mass - acceleration.

When an object is accelerating due to the force of gravity with no other forces acting on it, it is:

• changing direction
• motionless
• in free fall
• at terminal speed

Terminal speed occurs when...

• the air resistance of an object increases.
• an object starts to slow down due to air resistance.
• the force of gravity is balanced by the air resistance of an object.
• the acceleration due to gravity equals zero.