Answer:
The object will contine to fall, but at a constant velocity. There will be no more acceleration.
Explanation: When the force of gravity is equal to the reverse force of air resistance, there will will be no net force on the falling obect. F = ma, and F (net) = 0. It will continue at the same speed until those forces become imbalanced again (such as when the force pushing up from the ground is greater than the force of gravity pulling it down). The metric term for this sudden resistance is "crash/bang/clunk/yieouch."
Answer:
P = 5880 J
Explanation:
Given that,
The mass of a person, m = 60 kg
The height of the stairs, h = 10 m
We need to find the gravitational potential energy of the person. The formula is as follows :
Substitute all the values,
So, the required gravitational potential energy is equal to 5880 J.
An electric current will start to form when a part of the wire is within a magnetic field. Using the magnet you could put the whole wire into the magnetic field of the magnet and move it across the magnet so that a current starts to run.
Another way you could do it is to make the wire so that it looks like a coil and stick the magnet in the middle of the coil of wire. This will cause an induced current in the coil of wire.
I think you forgot to include the acceleration due to
gravity of astronauts. I assume that it is = 0.170 g. To get the answer we have
to use the formula s = v0t – (1/2) At². Where s is the altitude, A is the
acceleration of gravity, t is the time after throwing.
v = v0 –At
v = 0 at max altitude so v0 – At = 0
t = v0/A at max altitude
Using the formula above for the altitude:
s = v0t – (1/2) At²
s = v0(v0/A) – (1/2) A (v0/A)²
s = v0²/A – (1/2) v0²/A
s = (1/2) v0²/A
The earth: E = (1/2) v0²/g
The moon: M = (1/2)v0²(0.17g)
So, take the ratio of M/E = g/0.17g = 1/0.17 = 588
M = 5.88 E
He can throw the wrench 5.88 times higher on the moon
<span>M =5.88 (10 m) = 58.8 meters that the can throw
the wrench a little over on the moon.</span>
You can use the equation V=Vo+at since the acceleration is constant. Plugging in the values you know, you will get an answer of 3.75 seconds
