Question

If a cliff jumper leaps off the edge of a 100m cliff, how long does she fall before hitting the water? (assume zero air resistance)

Answer 1

Answer:

Hello,

QUESTION)

Assuming that the initial velocity of the jumper is zero, on Earth any freely falling object has an acceleration of 9.8 m/s².  

✔ We have : a = v/Δt = ⇔ Δt = v/a

• Δt = (√2xgxh)/9,8
• Δt = (14√10)/9,8
• Δt ≈ 4,5 s