WorksheetsFree Fallin'
Total questions: 49
Worksheet time: 28mins
If a ball is thrown straight up with a velocity of 10 m/s, how long will it take to return to its starting point? (Ignore air resistance)
1 second
2 seconds
10 seconds
20 seconds
The fact that an apple and a watermelon, dropped simultaneously from the same height, would hit the ground at the same time indicates that
you don't like apples or watermelons.
greater masses have greater acceleration.
lesser masses have greater acceleration.
acceleration is independent of mass.
What happens to the vertical velocity of a projectile as it goes up?
increases
decreases
stays the same
none of these
What happens to the vertical velocity of a projectile as it goes down?
increases
decreases
stays the same
none of these
A freely-falling watermelon falls with constant
acceleration
speed
velocity
distances each successive second
When a tossed object reaches maximum height the acceleration is
10 (m/s)/s down
10 (m/s)/s up
0 m/s
What is the only force acting on an object that is free-falling?
force of gravity
zero
the air resistance acting on the object
10 N
What is the unit for acceleration?
kg
m/s
N
m/s/s
A dropped object in true free fall on earth will reach a velocity of -10 m/s
after falling for 1 second
never
is constantly falling at this rate
after falling for 9.8 seconds
If an object has fallen for 2 seconds on earth from rest without air resistance, what is its speed?
20 m/s
15 m/s
10 m/s
0 m/s
A ball is thrown upward with an initial velocity of 10 m/s. What is its acceleration at the highest point of its trajectory?
0 m/s
-10 m/s/s
5 m/s
20 m/s
A ball is thrown upward with an initial velocity of 10 m/s. What is its velocity at the highest point of its trajectory?
0 m/s
-10 m/s/s
5 m/s
20 m/s
A ball tossed up has a ________ velocity on the way up.
positive and decreasing
positive and increasing
negative and decreasing
negative and increasing
A ball tossed up has a ________ velocity on its way down.
positive and decreasing
positive and increasing
negative and decreasing
negative and increasing
Hank tosses a ball upward at 5 m/s. What is its velocity when it returns to Hank's hand?
- 10 m/s
- 5 m/s
10 m/s
0 m/s
When a tossed object reaches maximum height the speed is
10 (m/s)/s down
10 (m/s)/s up
0 m/s
A feather and hammer are dropped from the same height on the moon (no air). Which hits the ground first?
both hit at the same time
hammer
feather
Neither. There is no gravity on the moon
the force of gravity on an object
friction
kinetic friction
weight
mass
the amount of matter in an object
Earth
mass
weight
surface
Which factor or force do we ignore during free fall motion problems?
A. Air resistance
B. Gravity
C. Magnetic
D. Inertia
A tennis player on serve tosses a ball straight up. While the ball is in free fall, its acceleration __________.
increases
decreases
increases and then decreases
decreases and then increases
remains constant
As the tennis ball travels through the air, its speed ___________ (going up and then down).
increases
decreases
increases and then decreases
decreases and then increases
remains the same
10 m/s2
10 m/s
slower than the speed it was thrown at.
faster than the speed it was thrown at.
the same speed that it was thrown at.
As a rock in FREE FALL falls through the air, its velocity __________.
stays constant
decreases until it hits terminal velocity
increases until it hits terminal velocity
increases ~10 m/s each second
You already know that __________pulls all objects towards the Earth.
gravity
air resistance
velocity
friction
Let’s go back to 1589, the year ______________ conducted his Leaning Tower of Pisa Experiment.
Einstein
Galileo
Newton
Scott
Galileo called his discovery the “______________________,” which stated that all bodies fall at the same speed in a vacuum.
pizza recipe
law of falling bodies
theory of relativity
law of thermodynamics
When the air is removed in a ____________, you can clearly see that both the bowling ball and the feather fall at the same rate of speed after all.
vacuum chamber
test tube
space shuttle
anti gravity chamber
the inertia of an object
The air resistance on falling objects _______________ as their speed increases.
increases
decreases
stays the same
A ball is thrown upwards with an initial speed of 20 m/s, how long will it take the ball to reach its highest point?
1 s
2 s
3 s
4 s
An object is in freefall when ______________ is the only force acting on an object.
friction
air resistance
gravity
The acceleration of gravity is always directed:
upward
downward
it depends which way your object is moving
Which of the dot diagrams best describe the motion of a free-falling object that is dropped from rest?
Diagram A
Diagram B
Diagram C
Which graph could represent a velocity-time graph for an object dropped at a height above the Earth?
10 m/s2
10 m/s
1. What will happen if you drop a golf ball, a baseball, and a bowling ball at the same instant from the top of a table?
The bowling ball will hit the ground first.
The baseball will hit the ground first.
The golf ball will hit the ground first.
All three balls will hit the ground at the same time.
Why is it harder to move a heavier object than a lighter one?
Heavier objects have more weight.
Heavier objects have more Inertia.
Heavier objects are actually easier to move.
Why don't heavier objects fall faster than lighter ones?
Heavier objects also have more inertia.
Gravity pulls on both objects the same.
Heavier objects experience more air resistance.
Heavier objects will actually fall faster in a vacuum chamber.
Which one of the following objects would free fall to the ground with the greatest acceleration?
A 5 kg rock
A 10 kg anvil
A 100 kg politician
They all free fall with the same acceleration
