Height and Range

Question 1

At what axis in the cartesian coordinate system is horizontal motion usually
associated?

Answer 1

x-axis

Question 2

What is the acceleration of a freely-falling object on earth?

Answer 2

-9.8 m/s2

Question 3

What do you call the path followed by a projectile?

Answer 3

Trajectory

Question 4

Consider a plane moving with a constant speed at an elevated height above the
Earth’s surface. During its flight, the plane drops a package from its luggage
compartment. Where will the luggage land with respect to the plane?

Answer 4

Directly below the plane

Question 5

A stand holds two white balls, A and B. At the same instant, ball A is dropped
straight down, and ball B is shot straight out. Which ball will hit the ground first?
(Neglect Air resistance)

Answer 5

Both balls will not reach the ground.

Question 6

A projectile is launched at an angle of 300 above the horizontal. Neglecting air
resistance, what are the projectile’s horizontal and vertical accelerations when it
reaches its maximum height?

Answer 6

The horizontal acceleration is zero and the vertical acceleration is -9.81
m/s2.

Question 7

A particle moves in a plane with constant acceleration in a direction from the initial
velocity. The path of the particle will be

Answer 7

a parabola