Cutting down trees can decrease the amount of water vapor entering the air through the processes of ____?
1 answer:
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Answer:
The pack has fallen 275.6 m
Explanation:
The pack is in free fall, so it is moving by uniform accelerated motion, so we can use the following suvat equation:
where, choosing upward as positive direction:
v is the final velocity
u is the initial velocity
is the acceleration of gravity
s is the vertical displacement
For the pack in this problem,
u = 0
v = -73.5 m/s
Solving for s, we find how far the packet has fallen:
And the negative sign means the direction of the displacement is downward.
Answer:
Explanation:
From the vertical movement, we know that initial speed is 0, and initial height is H, so:
solving for t:
Now, from the horizontal movement, we know that initial speed is V and the acceleration is -g/4:
Replacing values:
Simplifying:
Answer:
the maximum height reached by the marble is 11.84 m.
Explanation:
Given;
mass of the marble, m = 0.02 kg
extension of the string, x = 0.08 m
force applied to the string, F = 58 N
Apply the principle of conservation of energy;
elastic potential energy = gravitational potential energy
¹/₂fx = mgh
Therefore, the maximum height reached by the marble is 11.84 m.