Aball is fired vertically into the air. its height in feet t seconds later is given by the formula: h(t)= -2t^2+80t
a) what is the height of the ball after 3 sec?
b) what is the velocity of the ball after 5 sec?
c) when does the ball reach its man height?
d) what is the max height the ball reaches?

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?