A firecracker shoots up from a hill 165 feet high with an initial speed of 110 feet per second. Using the formula H(t) = −16t2 + vt + s, determine how long it will take the firecracker to hit the ground. 7.2 seconds 7.5 seconds 7.8 seconds 8.1 seconds
solve the equatuion -16t^2 + 110t + 165 = 0 you should get -2.7 and 8.1 secs answer is 8.1
Join our real-time social learning platform and learn together with your friends!