Janet jumps off a high diving platform with

Question

a horizontal velocity of 2.23 m/s and lands in
the water 1.7 s later.
How high is the platform? The acceleration
of gravity is 9.8 m/s
2
.
Answer in units of m

Answer 1

h = 0.5g*t^2 = 4.9*1.7^2 = 14.2 m.