1 When diving off a platform, a diver’s path is given by .,= 52 + 10 + 20
where is the distance above the water, in metres, and is the time
from the beginning of the dive, in seconds.
1.1.1 What is the height of the platform? (2)
1.1.2 At what point in time (in seconds) will the diver be 25 metres
above water? (8)
1.1.3 When will the diver enter the water?
