Answer:
Each object exerts a force on the other, and the two forces are equal and in opposite directions
Explanation:
Newton's 3rd Law Of Motion:
For every action, there is an equal and opposite reaction.
Answer:
force is a derived quantity
work is a fundamental quantity
2.Force is measured in Newton why work is measured in Newton per seconds (N/s)
Explanation:
no
Answer:
5.7141 m
Explanation:
Here the potential and kinetic energy will balance each other
![mgh=\frac{1}{2}mv^2\\\Rightarrow v=\sqrt{2gh}](https://tex.z-dn.net/?f=mgh%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2%5C%5C%5CRightarrow%20v%3D%5Csqrt%7B2gh%7D)
This is the initial velocity of the system and the final velocity is 0
t = Time taken = 0.04 seconds
F = Force = 18000 N
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²
Equation of motion
![v=u+at\\\Rightarrow a=\frac{v-u}{t}](https://tex.z-dn.net/?f=v%3Du%2Bat%5C%5C%5CRightarrow%20a%3D%5Cfrac%7Bv-u%7D%7Bt%7D)
From Newton's second law
![F=ma\\\Rightarrow F=m\frac{v-u}{t}\\\Rightarrow 18000=68\frac{0-\sqrt{2gh}}{0.04}\\\Rightarrow \frac{18000}{68}\times 0.04=-\sqrt{2\times 9.81\times h}\\\Rightarrow 10.58823=-\sqrt{2\times 9.81\times h}](https://tex.z-dn.net/?f=F%3Dma%5C%5C%5CRightarrow%20F%3Dm%5Cfrac%7Bv-u%7D%7Bt%7D%5C%5C%5CRightarrow%2018000%3D68%5Cfrac%7B0-%5Csqrt%7B2gh%7D%7D%7B0.04%7D%5C%5C%5CRightarrow%20%5Cfrac%7B18000%7D%7B68%7D%5Ctimes%200.04%3D-%5Csqrt%7B2%5Ctimes%209.81%5Ctimes%20h%7D%5C%5C%5CRightarrow%2010.58823%3D-%5Csqrt%7B2%5Ctimes%209.81%5Ctimes%20h%7D)
Squarring both sides
![112.11061=2\times 9.81\times h\\\Rightarrow h=\frac{112.11061}{2\times 9.81}\\\Rightarrow h=5.7141\ m](https://tex.z-dn.net/?f=112.11061%3D2%5Ctimes%209.81%5Ctimes%20h%5C%5C%5CRightarrow%20h%3D%5Cfrac%7B112.11061%7D%7B2%5Ctimes%209.81%7D%5C%5C%5CRightarrow%20h%3D5.7141%5C%20m)
The height from which the student fell is 5.7141 m
Oxygen and Neon have the same number of valence electrons because both the compounds are in the same group and the outer orbital of both the compounds consists of 6 electrons
<span>If your options are:
A.Both momentum and kinetic energy are vector quantities.
B.Momentum is a vector quantity and kinetic energy is a scalar quantity.
C.Kinetic energy is a vector quantity and momentum is a scalar quantity.
D.Both momentum and kinetic energy are scalar quantities.
</span>
The answer on the question given is letter B.<span>Momentum is a vector quantity and kinetic energy is a scalar quantity.</span>