Answer:
10 ms⁻¹
Explanation:
The amount of momentum that an object has is dependent upon two factors
- mass of the moving object
- speed of motion
In terms of an equation,
Momentum (P) = Mass(m)×velocity(v)
P = m×v
600 = 60 × v ⇒ v = 10 ms⁻¹
Answer:
<em>The pressure given by the water at the bottom is 58,800 Pa</em>
Explanation:
<u>Pressure Exerted by a Column of Liquid
</u>
The pressure P exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation:
P = ρgh
Where ρ is the density of the liquid, g is the acceleration of gravity g=9.8m/s^2, and h is the height of the column of liquid.
The height of water in a well is h=6 m. The density of water is a known quantity:
Calculating P:
P = 1,000*9.8*6
P = 58,800 Pa
The pressure given by the water at the bottom is 58,800 Pa
You haven't specified where the experiment took place. I'm going to
assume that it was somewhere on Earth. That's important.
The acceleration of gravity on or near the surface of the Earth is about 9.8 m/s² .
That means that a falling object falls 9.8 m/s faster every second.
So in 2 seconds of falling, its downward speed increases (2 x 9.8) = 19.6 m/s .
If the stone was falling at the rate of 3.0 m/s when the 2 seconds began,
then its downward speed at the end of the 2 seconds was
(3.0 m/s) + (19.6 m/s) = <em>22.6 m/s</em>
Answer:
C evaluating the solution