The Horizontal and Vertical Motions of a Projectile

A stone is just released from the window of a train moving along a horizontal straight track. The stone will hit the ground following:

• A. Hyperbolic path

• B. Straight path

• C. Circular Path

• D. Parabolic Path

What factor(s) affect(s) how far a projectile will land?

• A. Angle of launch

• B. Initial velocity

• C. Both angle and initial

  velocity

• D. None of the above

A baseball player throws a ball horizontally (at an angle of 0 degrees). Which statement best describes the

ball’s motion after it is thrown? (Neglect air resistance)

• A. Its vertical speed

  remains the same, and

  its horizontal speed

  remains the same.

• B. Its vertical speed

  increases, and its

  horizontal speed

  increases.

• C. Its vertical speed

  increases and its

  horizontal speed

  remains the same.

• D. Its vertical speed

  increases and its horizontal speed decreases

A cannonball is fired at an angle of 45 degrees to the horizontal.

Which of the following components of its initial velocity remains constant throughout its trajectory?

• A) Vertical velocity

• B) Horizontal velocity

• C) Total velocity

• D) Acceleration

A ball is thrown horizontally from the top of a cliff. Which of the following statements is true about its motion?

• A) The vertical velocity

  increases.

• B) The horizontal

  velocity increases.

• C) The vertical

  acceleration is zero.

• D) The horizontal

  acceleration is zero.

At what angle should a projectile be launched to achieve the maximum range?

• A) 30 degrees

• B) 45 degrees

• C) 60 degrees

• D) 90 degree

Which of the following quantities remains constant throughout projectile motion?

• A) Horizontal velocity

• B) Vertical velocity

• C) Acceleration

• D) Total velocity

What is the relationship between the time of flight and

the initial velocity of a projectile, neglecting air resistance?

• A) Directly proportional

• B) Inversely proportional

• C) No relationship

• D) Exponentially related

What is projectile motion?

• A) Motion of an object

  under the influence of gravity only.

• B) Motion of an object

  propelled by a force in a straight line.

• C) Motion of an object

  with varying velocity.

• D) Motion of an object in a circular path.

In projectile motion, when is the vertical velocity zero?

• A) At the highest point of the trajectory.

• B) At the lowest point of

  the trajectory.

• C) At the initial launch.

• D) Vertical velocity is

  never zero.