# Question #5d3e4

##### 2 Answers

Nov 18, 2017

#### Explanation:

Because the formula

If you use the formula

Nov 18, 2017

Free fall is always 9.8t

#### Explanation:

The difference is due to the d=vt equation being based on average velocity, not instantaneous velocity. For free fall, the initial velocity is zero, and the final velocity is how fast the object is moving just before it hits the ground. You'd find that final velocity using one of the kinematics equations.