FREE FALL & PROJECTILE MOTION

In free fall, A.  as the ball rises, its acceleration vector points upward.

• TRUE

• FALSE

In free fall, the acceleration of the ball is zero when the ball is at its highest point.

• TRUE

• FALSE

In free fall, the SPEED of the ball is negative while the ball falls back toward the earth.

• TRUE

• FALSE

At the same instant, object A is dropped from rest ; object B is thrown downward; and ball C is thrown upward from the same window. All three balls have the same acceleration at any instant.

• TRUE

• FALSE

In projectile motion, vertical motion is accelerated.

• TRUE

• FALSE

Horizontal velocity of projectile is constant.

• TRUE

• FALSE

In projectile motion, both horizontal and vertical velocities are constant.

• TRUE

• FALSE

A projectile must be thrown at 45 degrees to reach the greatest horizontal range.

• TRUE

• FALSE

Vertical component of the velocity is zero at the highest point of the trajectory of a projectile.

• TRUE

• FALSE

In projectile motion, the acceleration is 9.8 m/s² downward at all times.

• TRUE

• FALSE