Let F1=Force exerted by the brother (+F1)
F1= Force exerted by the sister (-F2)
Fnet=(+F1) + (-F2)
Fnet= (+F1) + (-F2)
Fnet=F1 - F2
Fnet= (+3N)+(-5N)
Fnet= -2N
-F
towards the sister (-F) (greater force applied)
Answer:
The velocity and translational kinetic energy of the acorn when hitting the ground are approximately 19 meters per second and 3 joules, respectively.
Explanation:
Let suppose that the acorn is a conservative system. By Principle of Energy Conservation, we understand that initial potential gravitational potential energy (
), in joules, which is related to initial height above the ground, is equal to the final translational kinetic energy (
), in joules, related to the instant just before hitting the ground. Let suppose that ground has a height of zero. That is:
(1)
(1b)
Where:
- Mass, in kilograms.
- Gravitational acceleration, in meters per square second.
- Height, in meters.
- Speed, in meters per second.
If we know that
,
and
, then the velocity and the translational kinetic energy of the acorn just before hitting the ground is:





The velocity and translational kinetic energy of the acorn when hitting the ground are approximately 19 meters per second and 3 joules, respectively.
A) position time graph for both is shown
here one of the graph is of lesser slope which means it is moving with less speed while other have larger slope which shows larger speed
At one point they intersects which is the point where they both will meet
B) Let the two will meet after time "t"
now we can say that
if they both will meet after time "t"
then the total distance moved by you and other person will be same as the distance between you and home
so it is given as



so they will meet after t = 6 min
so from position time graph we can see that two will meet after t = 6 min where at this position two graphs will intersect
How many feet of wire does it take to make one Slinky? Each one is made from 80 feet of wire and over a quarter billion Slinkys have been sold worldwide.