Question

bungee jumpers leap off high cliffs to enjoy the speed gravity gives them. what is the speed of a jumper 10 seconds after jumping

Answer 1

Answer:

98 m/s.

Explanation:

In this problem, we need to find the speed of a jumper 10 seconds after jumping. Initially, the bungee jumper was at rest. Let v is the speed after 10 s. Using first equation of motion.

v = u +at

Here, u = 0 and a = g

v = gt

v = (9.8 m/s)(10 s)

v = 98 m/s

So, the speed of a jumper 10 seconds after jumping is 98 m/s.

Answer 2

Answer:

-98

Explanation:

negative because -9.8(10)