WorksheetsVectors, Freefall, and Projectile Motion
Total questions: 54
Worksheet time: 30mins
A resultant vector is
equal to the sum of one vector.
equal to the sum of two or more vectors.
equal to the difference of one vector.
What is the resultant of these two vectors?
+17 m
+3 m
-17 m
-3 m
What is the resultant vector of the two labeled vectors?
+2 km
+14 km
-2 km
-14 km
10 m
scalar
vector
17 m/s, East
Vector
Scalar
velocity, acceleration, displacement
distance, acceleration, mass
distance, velocity, time
You slowly walked 10 km West and then quickly ran 10 km North. During each part of the journey, the ______________ was the same.
displacement
distance
time
velocity
The direction of this vector is
30 degrees east of north
30 degrees south of west
20 degrees north of east
If two vectors to be added are at right angles, you will need to
just add them together.
use the Pythagorean theorem.
use the Law of Tangents.
subtract the smaller for the larger.
Vectors are added visually using the
tail to tail method.
tail to head method.
tip to tail method.
head to head method.
"A ball that is thrown upwards slows down due to the force of gravity." Which of the 4 vectors pairs would be the most appropriate to match this scenario?
1
2
3
4
Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?
the feather
the metal bolt
They would hit the ground at the same time.
They would be suspended in a vacuum.
A hammer is dropped on Earth and the Moon. If gravitational pull on the Moon is about six times weaker than on Earth, where does a hammer fall faster?
Moon
Earth
No difference
Depends on the mass of the hammer
The state that exists when the only force acting on an object is gravity is called
momentum
acceleration
inertia
free fall
What happens to the velocity of a ball as it is dropped off a cliff?
It decreases at a uniform rate
It increases at a uniform rate
It is constant
It increases at a non-uniform rate
What values are always known for a free falling object?
d = -9.8 m vi = 0 m/s
vi = -9.8 m/s a = -9.8 m/s2
vi = -9.8 m/s a = 0 m/s2
vi = 0 m/s a = -9.8 m/s2
Which of the following statements applies to the motion of a ball tossed upward?
I. It has constant acceleration on the way up
II. It has constant acceleration at the top of its path
III. It has constant acceleration as it moves downward.
I only
I and III
III only
All are correct
A problem that asks "how long did it take" is prompting you for an answer measured in
distance in meters.
velocity in meters / second.
acceleration in meters / second^2.
time in seconds.
A problem that asks "how far did the object move?" is prompting you for an answer measured in
distance in meters.
velocity in meters / second.
acceleration in meters / second^2.
time in seconds.
Terry dropped a pebble from the top of his apartment building. The pebble impacted the ground after falling for 2.2 seconds. Calculate the height of the apartment building.
21.5 m
10.8 m
47.4 m
23.7 m
Now Denise climbs a 15 m high hill and drops the stone . How long does it take to hit the ground?
3.06 s
1.75 s
10.1 s
3.2 s
Which of these graphs correctly illustrates freefall?
A
B
C
All could be correct
An object is thrown horizontally from a cliff. The time it takes to fall to the ground is
more than if it was just dropped
the same amount of time than if it was just dropped
less than if it was just dropped
impossible to determine
You drop a banana. What is the banana's velocity after 2 seconds (rounded to the nearest whole number)?
-5 m/s
-10 m/s
-20 m/s
-30 m/s
In projectile motion, the vertical velocity is always constant.
True
False
In projectile motion, the horizontal velocity is always constant.
True
False
cannot be determined
cannot be determined
In a projectile motion we always have...
1 component (x)
3 components (x,y, and z)
2 components (x and y)
0 components
What is the direction of the acceleration for any projectile?
The direction the projectile is traveling.
Down
Up
Sideways
A projectile is fired with initial velocity vo at an angle θ0 with the horizontal and follows the trajectory shown above. Which of the following pairs of graphs best represents the vertical components of the velocity and acceleration, v and a, respectively, of the projectile as functions of time t?
A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. How do the speeds of the ball at the three points compare?
vP < vQ < vR
vR < vQ < vP
vQ < vR < vP
vQ < vR = vP
vP = vQ < vR
A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. Which of the following diagrams best shows the direction of the acceleration of the ball at point P?
The initial horizontal velocity of a projectile is ____ its final horizontal velocity.
less than
equal to
greater than
What is true about the vertical velocity of a projectile launched horizontally?
It is initially at its maximum value.
It increases due to gravity as it falls.
It remains constant throughout its trajectory.
It decreases as it falls due to gravity.
If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?
2m
10m
they both will hit the ground at the same time
An airplane traveling at constant velocity drops a bomb. Where is the airplane when the bomb hits the
ground?
above the bomb
before the bomb
past the bomb
Which of the following would NOT be considered a projectile?
A cannonball fired towards a distant castle.
A cannonball rolling down a slope.
A cannonball fired straight outward from a castle wall.
A cannonball after it rolls off the edge of a cliff.
Victor Velocity is standing on top of the roof of his house, firing stones with his slingshot over a level field. He is aiming straight outward, horizontally. If Victor pulls back harder on the sling to shoot a stone, which of the following quantities will be changed?
The vertical displacement of the stone.
The distance the stone travels, and the horizontal velocity.
The time it takes the stone to strike the ground, and the horizontal velocity.
The vertical value of a vector, such as the height
Resultant vector
Component vector
x-component
y-component
The horizontal value of a vector, such as the range
Resultant vector
Component vector
x-component
y-component
A package is dropped from an airplane, where will the package hit the ground?
A
B
C
What angle would give the same range (horizontal distance) as a projectile launched at 12 degrees?
88 degrees
78 degrees
24 degrees
45 degrees
What do angled launched and horizontal launched projectiles have in common?
They both speed up horizontally
They both fall at the same rate
They both start with no vertical velocity
They have nothing in common
