Projectile motion

Trajectory is the measurement of how an object travels in a curving path.

• true

• false

It is the curve path traveled by projectile.

• force of gravity

• air resistance

• projectile

• trajectory

Why does an object follow a curving path downward upon throwing it at a certain angle?

• The object follows curve path because of the air resistance.

• The object follows curve path because of the trajectory

• The object follows curve path because of the force of gravity.

• The object follows curve path because of the velocity.

Mass is a scalar quantity, so it has a direction.

• true

• false

Anything that is thrown or shot through the air is what we call projectile motion.

• true

• false

It is the rate at which velocity changes with time

• speed

• velocity

• trajectory

• acceleration

What is the constant value of the acceleration due to gravity?

• 9.9m/s2

• -9.6m/s2

• 9.9m/s2

• -9.8m/s2  

The trajectory of a ball's projectile motion is a straight line.

• true

• false

This negative sign indicates that the force is acting in the upward direction.

• true

• false

A projectile has two velocities, (Vy) in the horizontal direction and (Vx) in the vertical direction.

• true

• false