Answer:
532.0725 m
102.17270893 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s² = g
H = Height of cliff
Distance traveled in 3 seconds
Distance traveled by sound = 2H-44.145 m
The height of the cliff is 532.0725 m
Her speed just before she hits the ground is 102.17270893 m/s
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Below is the solution:
acceleration a = g(sinΘ - µcosΘ) = 9.8m/s² * (sin30º - 0.1*cos30º) = 4 m/s²
<span>velocity v = a*t = 4m/s² * 6.4s = 26 m/s </span>
Answer:
work is the answer because work is said to be done if an object is displaced by the application of force