-- <span>The gravitational force that you feel when you stand on the surface
of a planet depends on the planet's mass and size. It has </span><span><span>nothing
to do with the planet's orbit. (</span>Of course,"size" is also related to the
planet's mass, density, and surface area.)
-- One possible cause of deforestation is the removal of trees without
adequate replanting.
-- According to Hubble’s Law, the farther away a galaxy is, the faster
it is moving away from us
-- Electromagnetic energy can be defined as energy that moves at
the speed of light. If you conduct experiments to determine whether
the electromagnetic energy is moving in the form of particles or waves,
you find that it behaves as both.</span>
Answer:
A and D
Explanation:
Acceleration is the active change in speed, increasing or decreasing.
Answer:
Below
Explanation:
To find the acceleration of the car you can use this formula and rearrange :
vf = vi + at
We know that our time is 2 seconds, our initial velocity, vi, is 20 m/s, and our final velocity vf is 0 because the car comes to a stop before hitting the dog.
So we can just go ahead and plug in these values into the equation above :
0m/s = 20m/s + (a)(2s)
-20m/s = 2s(a)
Divide both sides by 2
-10m/s^2 = a
Therefore the acceleration of the car is -10m/s^2 [forward]
You could also write this as 10m/s^2 [back]
Hope this helps! Best of luck <3
B.
srry for short answer :)
