The word heliocentric means that the planets revolve around a star. For us it's the Sun.
So, the answer to this question is the Sun.
Answer:
So an MA of 1 then 2 newtons would be required to lift 20 KG
F = Mass Acceleration = 20 x 10 = 200 Newtons so to lift the same mass with 50 newtons then the mechanical advantage hast to be 200 divided by 50 = 4
A decrease in velocity is referred to as deceleration. If car is moving at 30 m/s and stop in 50 m .The value of deceleration is 11.56 ms−2.
<h3>How to calculate deceleration ?</h3>
While acceleration is motion in which an object's speed varies every second, deceleration is motion that causes an object to slow down.
We are aware that acceleration refers to an object's rate of increase in speed, and deceleration refers to an object's rate of decrease in speed. For instance, when we apply the brakes while driving, we benefit from the vehicle's ability to decelerate and slow down.
The Deceleration Formula is the final velocity minus the initial velocity, with a negative sign in the result because the velocity is decreasing, if starting velocity, final velocity, and time taken are given.
velocity of car = 30 m/s
car need to stop in 50m
Deceleration a = v^2 – u^2 / 2s
= 0^2 - 50^2 / 2*30
= 11.56
Deceleration of the care = 11.56 ms−2
To learn more about deceleration refer :
brainly.com/question/75351
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Answer:
5.05 ms⁻²
Explanation:
(check the graph)
when the block is pulled with a force , <em>force of kinetic friction (Fr)</em> appears resisiting the motion.
Fr = μR = μ*mg (where g- gravitational acceleration = 9.8 ms⁻²)
= 0.25 * 2 * 9.8
=4.9 N
According to Newton's second law of motion
we can apply F = ma to the motion assuming the block is moving right
F = ma (a - acceleration)
15 - 4.9 = 2*a
a = 5.05 ms⁻²
It depends on the brightness of its light—which is really just the sun's light reflecting off of the moon's<span> surface—and the earth's rotation. In order for the </span>moon<span> to be visible in the sky, it needs to be above the horizon. </span>
