Question

The equation h(t)=4.9t^2+100t+37.5 gives the height of a firework, in meters, t seconds after it is launched from a platform. What is the height of the platform? At what speed was the firework launched?

Height of the platform:
Launch speed of firework:

Answer 1

Answer: Answer Bellow (not certain that this answer is correct)

Step-by-step explanation: (a) Given acceleration a=15.5ms−2 for first 1.5 seconds, after starting from rest. Let v be velocity attained when fuel is exhausted.