Kinematics Review

A ball is thrown straight up in the air. Draw and label the force(s) acting on the ball at all depicted points along the ball's trajectory.

Now a ball is thrown at an angle. Again, draw and label the force(s) at all depicted points along the ball's path.

A car is traveling around a circular, banked turn as shown. If the track were to suddenly become frictionless, what would happen?

• The car would begin to slide up the ramp

• The car would begin to slide down the ramp

• The car would remain traveling around the curve at the same height

• It depends on the speed of the car

Which graph(s) represents a constant velocity?

• a and c

• b and c

• c

• a and b

What is the average velocity of the object between 15 and 40 seconds?

• 10.0 m/s

• -100 m/s

• -4 m/s

• 0 m/s

A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

When a pendulum swings, at which point(s) is the total energy highest?

• 1 and 5

• 2 and 4

• 3

• None of the above

Explain why it is more efficient to pull an object at an upward angle across a rough surface as opposed to down at an angle.

How fast does the plane appear to be moving to a person riding in the car?

• 520 m/s

• 460 m/s

• 30 m/s

• 490 m/s

A diagram that shows all the forces acting on an object and indicates where each force is acting is called an _________ free body diagram.