A=-a (Constant)
vf=-at+v
r=-(1/2)at^2+vt+ro
d=r-ro definition
d=-(1/2)at^2+vt
rewriting
d=vt -(1/2)at^2
Answer:
yes your answer is correct
Step-by-step explanation:
Answer:
For this case we have the following quadratic equation:
Where,
t: time
s: height of the ball
By the time the height is 20 feet we have:
Rewriting the polynomial we have:
Using the quadratic formula we have:
Substituting values we have:
Doing the calculations we have the roots are:
Answer:
the time when the football will be 20ft above the ground is:
B) 0.73 seconds or 1.46 seconds
Step-by-step explanation: