Step-by-step explanation:
A ball is launched straight up in the air from a height of 6 feet. The velocity as a function of time t is given by :
f(t) = -32 t+285
Height of the ball is :

C is constant. Here the ball is launched from a height of 6 feet. So,

At t = 2 s, 
At t = 9 s, 
Between 2 s and 9 s, the ball's height changed is : 1275 - 512 = 763 m.
Answer:
the first is true
Step-by-step explanation:
Answer: 3/2 I’m on something similar rn
Step-by-step explanation:
Step-by-step explanation:
15=2c+7
15-7=2c
8=2c
8/2=c
4=c
c=4