The conservation of momentum P states that the amount of momentum remains constant when there are not external forces.
We don't have external forces, so:
Where:
- mb is the mass of the bowling ball
- mp the mass of the pin
the initial velocities of the bowling ball and the pin.
the final velocities of the bowling ball and the pin.
Solving for v0b:
<h2>R/ The original velocity of the ball was 5.71 m/s.</h2>
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>
Answer: static electricity
Explanation:
When the plastic ruler is rubbed, friction opposes the motion and causes the transfer of electron from one surface to another such that plastic becomes negatively charged. When ruler is brought nearer to the paper, it induces the positive charge in the piece of paper.
In physics weight is the force exerted on a body by gravity so, the seller should have said it has a mass of 1 kg because mass is the amount of matter in an object.
