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- 1. Multiple Choice
A ball thrown straight up takes 8 total seconds to complete its journey all the way up and down. 1 second into its journey and 7 seconds into its journey the magnitude of its velocity will be ______________ and its direction _______________.
opposite, the same
the same, opposite
the same, the same
opposite, opposite
- 2. Multiple Choice
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
- 3. Multiple Choice
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.
- 4. Multiple Choice
The initial horizontal velocity of a projectile is ____ its final horizontal velocity.
less than
equal to
greater than
- 5. Multiple Choice
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.
- 6. Multiple Choice
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
- 7. Multiple Choice
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
- 8. Multiple Choice
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
- 9. Multiple Choice
The path followed by a projectile is also known as its
trajectory
range
height
vertical displacement
- 10. Multiple Choice
Once a projectile is launched, what is the only force that affects its motion?
mass
friction
inertia
gravity
- 11. Multiple Choice
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.
- 12. Multiple Choice
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.
- 13. Multiple Choice
If you throw a baseball straight up, what is its acceleration at the highest point?9.8 m/s29.8 m/s0 m/s20 m/s - 14. Multiple ChoiceWhat is the horizontal acceleration of a projectile?0 m/s29.8 m/s2
- 15. Multiple ChoiceTwo objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will hit the ground first?ABBoth objects hit the ground at the same timeunable to determine with the given information
- 16. Multiple ChoiceThe shape of the path a projectile follows...circularlinearwavyparabolic
- 17. Multiple ChoiceWhat is the vertical acceleration of a projectile?(neglect air resistance)0 m/s29.8 m/s2
- 18. Multiple Choice
In a projectile motion we always have...
1 component (x)
3 components (x,y, and z)
2 components (x and y)
0 components
- 19. Multiple Choice
What is the direction of the acceleration for any projectile?
The direction the projectile is traveling.
Down
Up
Sideways
- 20. Multiple Choice
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?
- 21. Multiple Choice
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?
- 22. Multiple ChoiceThe more mass an object has, the faster it will fall.TrueFalse
- Answer choicesTagsAnswer choicesTags