

Online Quiz 
Projectile Motion
Q7CA5D77 


AP Physics C
Practice Test 3 Projectile Motion 


Assume magic land conditions on all problems
unless stated otherwise. In other words there is no air resistance
or friction. 
1 
) 
Ben finds a bottomless pit in Nebraska. He throws a stone into it
downward at a 60 degree angle with an initial velocity equal to 12
m/s. What's the acceleration 9.8 seconds after the stone is
thrown? 1g 
2 
) 
Bozo, the physicist, throws a pie at a velocity of 12 m/s. It
makes an angle of 30 degrees with the horizon as it leaves his
hand. How far will the pie travel before hitting a policeperson at
the same height as the pie was thrown?
12.48 m 
3 
) 
If a ball is throw with a velocity of 25 m/s at an angle of 37
degrees above the horizontal, what is its horizontal velocity
component? 20 m/s 
4 
) 
A ball is thrown at an original speed of 8.0 m/s and an angle of
35 degrees above the horizontal. What is the speed of the ball
when it returns to the same horizontal level?
8.0 m/s 
5 
) 
When adding two vectors, the resultant will be greatest when the
angle between the two vectors is ____________.
zero 
6 
) 
Sir Winford fires a giant rock from a trebuchet at a 60 degree
angle with the horizontal and it lands 150 yards in front of him.
He then fires a second rock with a 25% more mass at an angle of 30
degrees and the same initial velocity as the first. What is the
second rock's range? 150 yards 
7 
) 
A paratrooper fires his rifle straight down when flying in a plane
horizontally. When the bullet hits the ground, the plane will be
_______________. Directly over the
bullet 
8 
) 
Bozo, the physicist, gets zapped with a Tesla coil as he stands on
top of his lab building. This causes him to jump over the edge at
a velocity of 5 m/s. The building is 3 meters high. As he jumps,
Bozo makes a 20 degree angle with the horizon. 


a) How high does he go? 0.15 m above starting
point 


b) How long does it take to reach the top? 0.17
sec 


c) What is the horizontal velocity at the top?
4.7 m/s 


d) How far does it travel horizontally before
hitting the ground? 2.9 m 


e) What is the xvelocity just before it hits
the ground? 4.7 m/s 


f) At what point in the Bozo's path is the
velocity highest? just before hitting the
ground 