Lesson 2: Projectile Motion
20 Questions
| Total Attempts: 1213
Questions and Answers
- 1.
![- ProProfs]()
- A.
True
- B.
False
- 2.
![In the equations below, the vertical acceleration of a projectile is known to be 9.8m/s/s(the acceleration of gravity).
- ProProfs]( "In the equations below, the vertical acceleration of a projectile is known to be 9.8m/s/s(the acceleration of gravity).")
In the equations below, the vertical acceleration of a projectile is known to be 9.8m/s/s(the acceleration of gravity).- A.
True
- B.
False
- 3.An object upon which the only force acting is gravity.
- 4.A cannonball is launched horizontally from the top of an 78.4-meter high cliff. How much time will it take for the ball to reach the ground and at what height will the ball be after each second of travel?
- 5.Anna Litical drops a ball from rest from the top of 78.4-meter high cliff. How much time will it take for the ball to reach the ground and at what height will the ball be after each second of motion?
- 6.Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration.
- A.
True
- B.
False
- 7.An object dropped from rest is not a projectile (provided that the influence of air resistance is negligible).
- A.
True
- B.
False
- 8.An object that is thrown vertically upward is also a projectile (provided that the influence of air resistance is negligible).
- A.
True
- B.
False
- 9.An object which is thrown upward at an angle to the horizontal is also a projectile (provided that the influence of air resistance is negligible).
- A.
True
- B.
False
- 10.A projectile is any object that once projected or dropped continues in motion by its own __________ and is influenced only by the downward force of __________ .
- A.
Inertia,Gravity
- B.
Mass,Frictional Force
- C.
Inertia,Frictional Force
- D.
None of the above.
- 11.Horizontal forces are not required to keep a projectile moving horizontally.
- A.
True
- B.
False
- 12.The horizontal velocity of a projectile can be changed.
- A.
True
- B.
False
- 13.The horizontal motion of a projectile is independent of its vertical motion.
- A.
True
- B.
False
- 14.Projectiles travel with a parabolic trajectory due to the influence of inertia.
- A.
True
- B.
False
- 15.Y = 0.5 • g • t2 is equation for vertical displacement for a horizontally launched projectile
- A.
True
- B.
False
- 16.The method of taking a single vector at an angle and separating it into two perpendicular parts. The two parts of a vector are known as components and describe the influence of that vector in a single direction.
- 17.The initial x-velocity (vix) can be found using the equation vix = vi•cosine(Theta) where Theta is the angle that the velocity vector makes with the horizontal.
- A.
True
- B.
False
- 18.The initial y-velocity (viy) can be found using the equation viy = vi•sine(Theta) where Theta is the angle that the velocity vector makes with the horizontal.
- A.
True
- B.
False
- 19.If the horizontal velocity of a projectile is constant; there is no horizontal acceleration.
- A.
True
- B.
False
- 20.The horizontal displacement of a projectile is dependent upon the horizontal component of the initial velocity.
- A.
True
- B.
False
Projectile motion is a type of motion caused by an object being dropped to the earth's surface. The force that is the cause of this motion is gravity. The object first goes upwards then is forced to come downwards. In this...
Questions: 10 | Attempts: 5031 | Last updated: Sep 23, 2020
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Sample QuestionAcceleration can be defined as the rate at which an object changes its position.
This assessment will become a part of the body of evidence used to determine your grade. In other words, doing well can improve your grade and doing poorly can lower your grade.
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Sample QuestionA stone with an initial velocity of zero is dropped from a bridge above a river. After 3 s, the stone strikes the water below the bridge. Approximately how fast is the stone traveling when it strikes the water?
This is the projectile motion questions which is from the screencast. It is broken into more parts with more details (8 parts) and you should put aside at least 20 minutes to be able to complete it.
Questions: 9 | Attempts: 401 | Last updated: Oct 15, 2013
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Sample QuestionA cannon fires a 1kg cannonball with a velocity of 100m/s at 60 degrees to the horizontal and from a cliff which is 20m above sea level What is the vertical compoenent of its velocity?
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