Questions and answers by

Dr. Neutron

Questions (1)

A circus performer throws an apple toward a hoop held by a performer on a platform (see figure below). The thrower aims for the
1. 1 answer
2. 971 views

a=-.0107r b=.0107*6.16*10^15=6.59*10^13
1st:use this format equation--> -1/2*9.81t^2+(21*sin(-30)t)+50 which gives -->-4.9t^2-10.5t+50 2nd: now use the quadratic formula to find the time-->(-(-10.5)+/- the square root of(-10.5^2-(4*-4.9*50)))divide by(2*-4.9)=-4.44 and2.30 3rd: use only the
1st:-1/2*9.81t^2+(30*sin(-30)t)+49-->-4.9t^2-15t+49 2nd: use the quadratic formula to find time in second-->(-(-15)+or -square root (-15-4(-4.9*49))divide the whole thing by -9.81=-5.04s or 1.98s 3rd: take 1.98s multiply for the answer-->
*For a) the point for 1.50s is (1.50s, 11m) and for 4.50s is (4.50s,17.5m) *Plug in thee average velocity formula: Vav= delta y over delta t which is(17.5m-11m)/(4.50s-1.50s)=2.17jm/s *For b) you need another point on the orange line, let chose

Ask a New Question