Answer:
A of the shaded figure is 90cm
Answer:
The kinetic energy is 20,000\ J
Step-by-step explanation:
The kinetic energy of a body is defined as:

Where <em>m</em> is the mass of the roller coaster car
<em>s</em> is the speed and <em>k</em> is the kinetic energy
We know that 

Then the kinetic energy of the roller coaster car is:

Answer:
nice.
Step-by-step explanation:
Topic 11 lesson 11-4 homework
Answer:
I suppose C?
Step-by-step explanation: