(1) The graph labeled “y(t) vs. t” shows the vertical position of a projectile from the moment
of launch to when it lands. The projectile is launched with initial velocity v0 = 20m/s. The
table is a list of vertical velocity values with their corresponding times throughout the
projectile’s motion.
a. Find both the average vertical velocity and average vertical acceleration of the
projectile throughout its motion.
b. Find both the instantaneous velocity and instantaneous acceleration at time t =3s.
c. Draw both the velocity versus time and acceleration versus time graphs.
Time (s) Velocity (m/s)
0 20
1 10
2 0
3 -10
4 -20
y(t) vs. t y(t)
t
Sample Solution
