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WorksheetsAP Physics 1: 2D Kinematics
Total questions: 51
Worksheet time: 12hrs 17mins
At what point is vy= 0 m/s?
A
B
C
D
None of these points
At what point is vx= 0 m/s?
A
B
C
D
None of these points
Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?
Who do you agree with?
Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”
Barry: “Both vx and vy are constant.”
Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”
Dave: “A projectile has vertical acceleration and a constant horizontal velocity”
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?
A
B
Both at the same time
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground farther from the base of the cliff?
A
B
Both at the same distance
A ball is thrown into the air at some angle, with initial velocities vx (horizontal) and vy (vertical). At the very top of the ball’s path:
What is its velocity in the horizontal direction?
vx
Greater than vx
Zero
A ball is thrown into the air at some angle, with initial velocities vx (horizontal) and vy (vertical). At the very top of the ball’s path:
What is its velocity in the vertical direction?
vy
Greater than vy
Zero
In the absence of air resistance, the angle at which a thrown ball will go the farthest is?
90°
30°
60°
45°
If a ball thrown straight up into the air takes 4 seconds to reach the top (peak), how long will it take to travel from the peak back to the original position?
0s
1s
3s
4s
The initial horizontal velocity of a projectile is ____ its final horizontal velocity.
less than
equal to
greater than
How do you choose the correct kinematic equation?
Always go with lil pup cause it's the littlest and easiest
Ask the sorting hat
Choose equation that has only 1 of your unknown variables
The ball took 0.45 s to hit the ground 0.72 m from the table. What was the horizontal velocity of the ball as it rolled off the table?
0 m/s
0.63 m/s
1.6 m/s
2.2 m/s
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
Problem #3
A car is traveling at a velocity of 35.0 miles per hour. The car runs off a cliff that has an unknown height. The car 'lands' 50.0 meters from the base of the cliff.
How long would it take the car to 'land' after exiting the rim of the cliff?
1.4 seconds
3.2 seconds
4.8 seconds
0.7 seconds
Beau throws a baseball at 23.0 m/s at an angle of 25.0 degrees relative to the ground.If the ball was caught 42.0 m from Beau, find the components
Vx=20.8 m/s
Vy=9.72 m/s
Vx=9.72 m/s
Vy=20.8 m/s
Vx=20.8 m/s
Vy=19.72 m/s
Vx=19.8 m/s
Vy=9.72 m/s
Beau throws a baseball at 23.0 m/s at an angle of 25.0 degrees relative to the ground.If the ball was caught 42.0 m from Beau, find the time the ball was in the air
0.991 seconds
1.52 seconds
1.98 seconds
2.05 seconds
A projectile is launched at an angle of 45o with a velocity of 250 m/s. If air resistance is neglected, the magnitude of the horizontal velocity of the projectile at the time it reaches maximum altitude is equal to
0 m/s
175 m/s
200 m/s
250 m/s
A baseball is thrown straight upward. What is the ball's acceleration at its highest point?
1/2 g, downward
g, downward
1/2 g , upward
g, upward
A stone is thrown horizontally with an initial speed of 10 m/s from a bridge. If air resistance could be ignored, how long would it take the stone to strike the water 80 m below the bridge?
1 s
2 s
4 s
8 s
Two objects are thrown vertically upwards simultaneously, one on the surface of Mars and the other on the surface of Ganymede, a moon of Jupiter. Both have an initial velocity of 20 m/s. Both objects will take the same time to reach the highest point of their trajectory.
True
False
If the acceleration vector of an object is directed anti-parallel to the velocity vector,
the object is turning.
the object is speeding up.
the object is slowing down.
the object is not moving.
A plane has an airspeed of 142 m/s. A 16.0 m/s wind is blowing southward at the same time as the plane is flying. If the velocity of the plane relative to Earth is due east, what is the magnitude of that velocity?
16.2 m/s
16 m/s
158 m/s
141 m/s
A ball rolls off the edge of a table. The horizontal component of the ball's velocity remains constant during its entire trajectory because
the ball is not acted upon by any force.
the net force acting on the ball is zero.
the ball is not acted upon by a force in the horizontal direction.
the ball is not acted upon by a force in the vertical direction.
Susie and Marcy drop rocks from an overhang into the river below. Susie drops the rock straight downwards. Marcy throws her rock with an initial horizontal velocity of 25 m/s. Choose the correct statement.
Susie's rock reaches the river first.
Marcy's rock reaches the river first.
Both rocks will reach the river at the same time.
Cannot be determined without knowing the mass of the rocks.
The horizontal and vertical components of the initial velocity of a football are 24 m/s and 7 m/s respectively. What is the initial velocity of the football?
31 m/s
25 m/s
17 m/s
42 m/s
The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively. How long does it take for the football to rise to the highest point of its trajectory?
1s
2s
3s
4.0 s
A hockey puck slides off the edge of a table with an initial velocity of 20.0 m/s. The height of the table above the ground is 2.0 m. What is the magnitude of the velocity of the puck just before it touches the ground?
21 m/s
22 m/s
24 m/s
25 m/s
A person throws a ball horizontally from the top of a building that is 24.0 m above the ground level. The ball lands 100 m down range from the base of the building. What was the initial velocity of the ball?
202 m/s
9.8 m/s
19.6 m/s
45.2 m/s
A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground. How far from where the child is standing does the ball hit the ground?
1.22m
5.14m
6.79m
7.46m
A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 60° above the horizontal. What is the horizontal distance to the point where the football hits the ground?
20m
35m
18m
60m
A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the horizontal component of its velocity at the highest point of its trajectory?
9.8 m/s
17 m/s
4.9 m/s
8.7 m/s
A ball is thrown at an angle 45.0° above the horizontal from ground level with an initial velocity of 20.0 m/s. What is the range of the ball?
20m
40.8m
19.6m
34.4m
A soccer player carries the ball for a distance of 40.0 m in the direction 42.0° west of south. Find the westward component of the ball's displacement.
26.8 m
29.7 m
32.2 m
36.0 m
What is happening between 2 and 3 seconds?
The object is not moving.
The object is not accelerating.
The object is slowing down.
The object is speeding up.
A plane has an airspeed of 142 m/s. A 30.0 m/s wind is blowing southward at the same time as the plane is flying. What must be the direction of the plane in order to move due east relative to the ground?
11.9° north of east
12.2° north of east
78.1° north of east
Who had the greatest average speed after 100 seconds?
Mike
Katelyn
Alex
They had the same average speed
Which of the following is a scalar quantity?
Displacement
Velocity
Acceleration
Time
A ball is thrown vertically upwards. What is the direction of its acceleration at the highest point?
Upwards
Downwards
Horizontal
Zero
What is the formula to calculate average velocity?
v = d/t
v = a*t
v = d*a
v = t/d
Which of the following is a vector quantity?
Speed
Distance
Time
Acceleration
What is the acceleration due to gravity on Earth?
9.8 m/s^2
5.0 m/s^2
2.0 m/s^2
0.0 m/s^2
The graph above shows the velocity versus time for an object moving in a straight line. At what time after t = 0 does the object again pass through its initial position?
Between 0 and 1
1 s
Between 1 and 2 s
2s
Between 2 and 3 s
Consider a ball thrown up from the surface of the earth into the air at an angle of 30° above the horizontal. Air friction is negligible. Just after the ball is released, its acceleration is:
0 m/s2
Upwards at 9.8 m/s2
Downwards at 9.8 m/s2
Upwards at 4.9 m/s2
None of these
A ball is tossed straight up and later returns to the point from which it was launched. If the ball is subject to air resistance as well as gravity, which of the following statements is correct?
The speed at which the ball returns to the point of launch is less than its speed when it was initially launched.
The net work done by air resistance on the ball during its flight is zero.
The time for the ball to fall is the same as the time for the ball to rise.
The force of air resistance is directed down-ward both when the ball is rising and when it is falling.
The net work done by gravity on the ball during its flight is greater than zero.
Ball A is thrown upward with 3 times the velocity of Ball B. How will its maximum height compare to Ball B’s maximum height?
2 times higher
3 times higher
6 times higher
9 times higher
None of the above
Which of the following sets of graphs might be the corresponding graphs of Position, Velocity, and Acceleration vs. Time for a moving particle?
A ball is thrown horizontally from a height of 20 meters with an initial speed of 15 m/s. How long will it take for the ball to hit the ground?
1.5 s
2.0 s
2.5 s
3.0 s
What is the vertical component of the velocity of a projectile launched at an angle of 60° with an initial speed of 30 m/s?
15 m/s
25.98 m/s
30 m/s
20 m/s
A car travels 100 meters north and then 100 meters east. What is the magnitude of the car's displacement?
100 m
141.42 m
200 m
50 m
A plane is headed eastward at a speed of 156 m/s. A 20.0 m/s wind is blowing southward at the same time as the plane is flying. The velocity of the plane relative to the ground is
157 m/s at an angle 7.31° south of east.
157 m/s at an angle 7.31° east of south
155 m/s at an angle 7.36° south of east
155 m/s at an angle 7.36° east of south
