The steps taken in scientific studies often follow similar patterns. which answer correctly describes the order in which the steps should be performed?
a. state a hypothesis, then design an experiment to test it.
b. perform an experiment, then state a hypothesis that fits the results.
c. draw a conclusion, then design an experiment to support it.
d. state a theory, then find examples to support it so that it becomes a law.

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?