Answer:
W = 18.88 J
Explanation:
Given that,
Constant force, F = 11.8 N (in +x direction)
Mass of an object, m = 4.7 kg
The object moves from the origin to the point (1.6i – 4.6j) m
We need to find the work is done by the given force during this displacement. The work done by an object is given by the formula as follows :
So, the work done by the given force is 18.88 J.
Answer: it will move towards the west
Explanation:
The acceleration of gravity toward any object depends on its mass
and your distance from its center.
In space, the size AND DIRECTION of 'g' depends on the masses
around you and your distance from the center of each one.
If there's one object ... like a planet or a star ... that's bigger than
any others and closer to you than any others, then you can ignore
the others and just calculate the acceleration of 'g' toward that one
object that drowns out the others.
Example:
If you're in space only a few hundred miles from the surface of the
Earth, like maybe on board the International Space Station, then the
'g' on you is practically all due to the Earth and the sun, and you can
ignore the effects of gravity pulling you toward Jupiter, toward the Moon,
and toward the space station itself.
Answer:
Option C
your friends ball hits the ground at the same time as yours, and goes twice as far
Explanation:
The vertical speed is the same but the horizontal speed of your friend is twice yours. This implies the time to hit the ground is the same but after hitting the ground since the horizontal speed of your friend is twice, then the ball moves a horizontal diatance twice yours. Therefore, option C is correct.
Answer: Liquefaction occurs when the structure of a loose, saturated sand breaks down due to some rapidly applied loading.
As the structure breaks down, the loosely-packed individual soil particles attempt to move into a denser configuration. Liquefaction most often occurs when three conditions are met:
loose, granular sediment or fill
saturation by groundwater
strong shaking
