Answer:
9
Step-by-step explanation:
i think plz give brainleast
The slopes of perpendicular lines are negative reciprocals
parallel lines have the same slope
Yes it does because when u multiply 2 negative you get a positive but since your adding another negative it goes back to a negative
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:
14.8 feet
Step-by-step explanation:
since this is creating a right triangle you can use the Pythagorean theorem which is a^2 + b^2 = c^2, and by plugging in the one leg length and the hypotenuse length you get 14.8324 which rounds up to 14.8