Answer:
490m
Explanation:
Given parameters:
Time taken = 10s
Unknown:
Depth of the well = ?
Solution:
To find the depth of the well, we apply the appropriate motion equation:
h = ut + gt²
h is the depth
u is the initial velocity
g is the acceleration due to gravity = 9.8m/s²
t is the time taken
Input the parameters and solve;
The ball was dropped from rest; u = 0
h = gt²
h = x 9.8 x 10² = 490m
they are closer!!
Hope this helped!! :D
v=v0 - gt
The equation for velocity is
where v0=14m/s, g=10m/s^2.
in 1 second:
v=14-10=4m/s
it is positive so direction is upwards
in 2 seconds:
v=14-20=-6m/s
it is negative so direction is downwards
the first one is the correct answer
true