Answer:
14 m/s
Explanation:
The motion of the stone is a free fall motion, so an accelerated motion with constant acceleration g = 9.8 m/s^2 towards the ground. So, we can use the following SUVAT equation:

where
v is the final speed of the stone as it reaches the water
u = 0 is the initial speed
g = 9.8 m/s^2 is the acceleration
h = 10 m is the distance covered by the stone
Solving for v, we find

Answer:
<em><u>True:</u></em> because when u look thru a telescope you are making an observation
Explanation:
Supposedly there is life on Mars but it’s early to say for sure
Explanation:
Acceleration is the change in speed over a given time period