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Projectile Motion

Quiz by Stephen Gillis

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29 questions
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  • Q1
    an object thrown or launched through the air which is only under the influence of the force of gravity.
    A projectile is...
    30s
  • Q2
    is the parabolic path that a projectile takes through the air.
    The trajectory of a projectile is...
    30s
  • Q3
    only under influence of the force of gravity, and as a result experiences an acceleration due to gravity of 9.8 m/s^2 downward.
    An object in freefall is...
    30s
  • Q4
    the highest point in the object's motion. At that point the vertical velocity of the object is zero.
    The apex of projectile's trajectory is...
    30s
  • Q5
    None, the Horizontal and Vertical motions are independent of each other, i.e. what happens Horizontally does not affect the Vertical.
    What's the relationship between an object's Horizontal and Vertical motions?
    30s
  • Q6
    the motion of an object that is left or right, or parallel to the ground.
    A Horizontal motion is...
    30s
  • Q7
    the motion of an object that is up or down, or perpendicular (90 degrees) to the ground.
    A Vertical motion is...
    30s
  • Q8
    9.8 m/s^2 down
    What is the acceleration of an object in freefall on Earth?
    30s
  • Q9
    'g' represents the constant 9.8 m/s^2, which is the acceleration due to gravity on the planet Earth.
    What does the variable 'g' represent?
    30s
  • Q10
    Trick question - they'll hit at the same time. Without drag the Hammer and the Feather accelerate downwards at the same rate.
    If you drop a Hammer and a Feather in a vacuum at the same time from the same height, which will hit the ground first? (Vacuum is an area without an atmosphere, so there is no air resistance or drag)
    30s
  • Q11
    Only the Force of Gravity is acting on the football.
    After a football has been thrown and is traveling to its target, what force(s) are acting on it?
    30s
  • Q12
    The horizontal motion is constant because there are no horizontal forces acting on the football.
    After a football has been thrown and is traveling to its target, how would you describe its horizontal motion?
    30s
  • Q13
    The vertical motion is changing due to force of gravity. So the football is accelerating downward at 9.8 m/s^2.
    After a football has been thrown and is traveling to its target, how would you describe its vertical motion?
    30s
  • Q14
    The vertical velocity is zero at the apex, or the highest point when the football switches from traveling up to traveling down.
    After a football has been thrown and is traveling to its target, at what point is the vertical velocity zero?
    30s
  • Q15
    The football is moving the fastest at the lowest point of the trajectory.
    After a football has been thrown and is traveling to its target, when is the football moving the fastest?
    30s

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