1. Don Joriel stands on a vertical cliff edge throwing stones into the sea below. He throws a stone horizontally with a velocity of 20ms-1, 560 m above sea level.
a. How long does it take for the stone to hit the water from leaving Don Joriel’s hand?
Use g = 9.81 ms-2 and ignore air resistance?
b. Find the distance of the stone from the base of the cliff when it hits the water.
2. When Maggie applies the brakes of her car, the car slows uniformly from 15.00 m/s to 0.00 m/s in 2.50 s. How many meters before a stop sign must she apply her brakes?
The Attempt at a Solution
please help me with those problem, I am confused. I am not sure if i got the correct answer. here are my answers 1. a. 2.04 s
b. 20.39 m
2. 18.75 m
Hope you can help me, if got the wrong answer please show me the solution... Thanks a lot...