Answer:
a) 
b) 
c) 
Explanation:
a) Let's calculate the work done by the rocket until the thrust ends.
But we know the work is equal to change of kinetic energy, so:
b) Here we have a free fall motion, because there is not external forces acting, that is way we can use the free-fall equations.
At the maximum height the velocity is 0, so v(f) = 0.
c) Here we can evaluate the motion equation between the rocket at 25 m from the ground and the instant before the rocket touch the ground.
Using the same equation of part b)
The minus sign of 25 means the zero of the reference system is at the pint when the thrust ends.
I hope it helps you!
Answer:
can i have your number please
Answer:
Option B
Explanation:
An operational amplifier usually has a high open loop gain of around 10^5 which allows a wide range get of feed back levels in order to achieve the desired performance so therefore a low open loop gain reduces the range feed back level thereby reducing the performance which can cause errors in the output voltage.
Answer:
answer is D
Explanation:
comparing the spending habits of two different families.
It is going backwards fast, then it is going backwards slowly.
<u>Explanation:</u>
Motion is a term which is used in Physics. It is the change in the position of an object with time because of some force that is acting upon the object.
In mathematics, motion is described and defined as the and in the terms of the speed, time and the change or the displacement of an object from it's original place. This is because of the force acting upon the object.
