10. • Looking for t and talking about position •Set s(t) or position = 0, solve for t (this finds when the object was on the ground) •If you know when the object is on the ground you can determine how long it is in the air!
14. • Velocity = 0 at the max height (slope of the tangent line is 0, slope goes from + to – or – to +) •So find t by setting velocity equal to 0 and then plug in t into position to determine the height
16. • Same as max height time (velocity is 0, no movement) •Velocity = 0, solve for t
17. What is the velocity when the object hits the ground (impact velocity)?
18. • Looking for v(t), but you need a time first (time when the object hits the ground) •Set s(t) or position = 0, solve for t (this finds when the object was on the ground) •Now plug in t into v(t)
24. • Determine the starting and ending positions •Find when the object changes direction (v(t)=0 and solve for t) •Then find the distance traveled for each section and add them together