Final answer:
The time it takes for the apple to reach the ground is approximately 10 seconds.
Step-by-step explanation:
The question asks for the time it takes for an apple to reach the ground when released from rest 500m above the ground. We can solve this using the equation:
t = sqrt(2h/g)
where t is the time, h is the height, and g is the acceleration due to gravity. Plugging in the values, we get:
t = sqrt(2*500/9.8)
t = sqrt(102/9.8)
t ≈ 10.102
Therefore, the answer is 10 seconds (b).