Question

5. A hiker accidentally drops an apple from a cliff. She observes that it hits the ground below after 2.4 s. If the apple accelerated at 10 m/s (gravity) while falling, how high was the
cliff?
cliff height -
וח
"Round your answer to the nearest thousandth if necessary,

Answer 1

Answer:

28.8m

Explanation:

Given parameters:

Time of fall  = 2.4s

Acceleration due to gravity = 10m/s²

Unknown:

Height of cliff  = ?

Solution:

To solve this problem, we use the expression:

          H  = ut + $\frac{1}{2}$gt²  

u is the initial velocity

t is the time taken

g is the acceleration

t is the time

      H  = 0x2.4  + $\frac{1}{2}$ x 10x2.4²   = 28.8m