WorksheetsAP Homework 3
Total questions: 20
Worksheet time: 40mins
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 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.
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
Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a
horizontal velocity?
the launched ball
the dropped ball
they both hit 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
What is the velocity of an object launched straight up at its highest point?
zero
equal to its vx
½ its maximum value
equal to gravity
The path followed by a projectile is also known as its
trajectory
range
height
vertical displacement
Which of the following statements about the horizontal and vertical components of projectile motion is true?
Changes in the horizontal component occur only when the vertical component changes.
Both the horizontal and vertical components are always constant.
The vertical component changes while the horizontal component stays the same.
The horizontal and vertical components are dependent of each other.
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.
In the diagram, which letter represents the vertical displacement Δy ?
A
B
C
D
In the diagram, which letter represents the horizontal displacement Δx ?
A
B
C
D
A projectile is launched with a horizontal velocity of 20 m/s and an initial vertical velocity of 20 m/s. Which graph correctly shows the vertical velocity of the projectile over time?
A projectile is launched with a horizontal velocity of 20 m/s and an initial vertical velocity of 20 m/s. Which graph correctly shows the horizontal velocity of the projectile over time?
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?
Two projectiles are fired horizontally from the same height but with different velocities as shown in the picture. Which one will hit the ground first?
The one on the left.
The one on the right
They will hit at the same time.
