Free Fall
Horizontal Projectile Motion
Misc.
100
What is the only force acting on an object in free fall?
Gravity
100
Choose the correct word that makes the statement accurate.
A horizontal projectile is launched (PARALLEL or PERPENDICULAR) to the ground.
A horizontal projectile is launched PARALLEL to the ground.
100
A ball is thrown upward and the path of it is shown below. At which point along the path is the ball moving with the LEAST amount of speed?
B. The velocity of the ball is 0 m/s at the height of its trajectory.
200
What is the rate of acceleration of an object as it moves closer to the surface of Earth?
-9.81 m/s2
200
For a horizontally launched projectile, in which direction does the object's speed remain constant?
Horizontal (x - direction)
200
An apple, a bowling ball, and a couch are all dropped from the top of the Eiffel Tower. Which object will take the GREATEST time to reach the ground?
They will all hit the ground at the same time.
Mass has no effect on the time it takes for an object to hit the ground.
(In a relative distance)
300
Select ALL options that represent an object in free fall.
A.) A baseball being thrown straight up then coming back down
B.) A meteor falling through Earth's atmosphere
C.) A football punted by the punter across the field
D.) A rock is dropped off a cliff into a lake
ALL OPTIONS ARE OBJECTS IN FREE FALL EXCEPT C
A, B, D
300
Which of the following factors affects the TIME it takes for an object to reach the ground when horizontally launched?
a.) The initial speed of the object
b.) The height from which it is launched
c.) The final speed of the object
d.) The mass of the object
b.) The height from which it is launched
300
According to the following figures, in which trial will the object reach the ground FIRST? (assume drop height is the same in both scenarios)
They will hit the ground at the same time.
400
Choose the correct word to accurately describe an object in free fall:
The velocity of an object in free fall (INCREASES or DECREASES) as it nears the surface of the Earth.
The acceleration of an object in free fall is (ZERO or NONZERO).
The velocity of an object in free fall INCREASES as it nears the surface of the Earth.
The acceleration of an object in free fall is NONZERO.
400
Using the equation, d = (vobject)(tobject), calculate the distance travelled of a baseball horizontally launched at a speed of 2.5 m/s after 8 seconds.
20 meters
400
If the object below is originally launched from a height of 21 m with an initial velocity of 0.5 m/s and reaches the ground in 2.12 seconds. How long would it take the object to reach the ground if the height was HALVED? 
1.06 seconds.
It would half the time it takes for the object to reach the ground.
500
Using the equation above, calculate how long an object would take to hit the ground if dropped from a height of 32.7 meters.
Round your answer to the nearest hundredth and do not forget to include units.
sqrt((2*32.7)/9.81) = 2.58 s
500
Use the equation, d = (vobject)(tobject), for the following problem.
If a basketball is launched horizontally at a speed of 2.7 m/s and covers 5 meters and a football is launched horizontally at a speed of 4.2 m/s and covers 8 meters; Which ball is in the air for a GREATER amount of time?
Must include value and units in your answer to receive full credit.
The baseball = 1.85 seconds
The football = 1.91 seconds
Therefore, the football is in the air for a GREATER amount of time.
500
If a horse drops an apple from its mouth and it takes 0.5 seconds for the apple to hit the ground, at what time once the turtle starts moving would the turtle need to drop the apple if the turtle is moving at 1 m/s for 5 seconds?
The horse would need to drop the apple 4.5 seconds once the turtle starts moving, in order to hit it on the head.