Answer:
equation: Vf=Vo - at
t= (Vf- Vo)/a
t=(0m/s - 18m/s)/(-2.5m/s²)
t= 7.2 s
The correct matches are as follows:
<span>1. Mechanical Energy
</span>This is the energy of motion and position - Kinetic Energy and Potential Energy are included here.
<span>
2. Electrical Energy
</span>This is the type of energy that is given off as a result of electrons (charges!) moving through a conductor.
<span>
3. Light Energy
</span>This is the only form of energy we can see with our eyes!
<span>
4. Thermal Energy
</span>This is heat energy! It can be transferred through conduction, convection, or radiation.
<span>
5. Sound Energy
</span>This is energy that is transmitted through vibrations.
<span>
6. Kinetic Energy
</span>This is the energy that all moving objects have. <span>
7. Potential Energy
</span>This is stored energy, waiting to be used!
<h2>Hello!</h2>
The answer is: A. 19.3 joules
<h2>
Why?</h2>
Since it's an elastic collision, the kinetic energy after and before the collision will be the same.
Kinetic energy can be calculated using the following equation:
Where:
So,
First object, (going to the right):
Second object:, (going to the left):
Remember,
Hence,
The total kinetic energy after the collision will be:
The total kinetic energy after the collision is 19.3 joules (rounded to the nearest tenth)
Have a nice day!
<span>circumference of orbit = pi*1/2*1.5e11m = 2.356e11 meters
in 13 weeks, there are 13*7*24*60*60 seconds = 7.862e6 seconds
avg speed = 1/4*2.356e11meters/7.862e6sec = 0.07492e5 = 7.49e3m/sec
the avg velocity is 1.414* radius of the orbit </span>
