Acceleration = (change in speed) / (time for the change)
change in speed = (20-120)= -100 m/s.
1.5 min = 90 sec
acceleration = -100/90 = -1.11 m/s^2.
We don't care about the 150kg or the 2,500 meters. They don't make any difference.
Answer:
Step-by-step explanation:
First, to find the original line, employ the slope formula.
The slope of your original line is .
Next, plug in your slope and the third point to the point-slope formula.
To find the line which is perpendicular to the line, take the opposite reciprocal of the slope.
To find the opposite, flip the sign. is negative, so it will become , which is positive.
To find the reciprocal, flip the fraction. would become .
Your slope for the perpendicular line is , so your line is:
Answer:
After 7.40 years it will be worth less than 21500
Step-by-step explanation:
This problem is solved using a compound interest function.
This function has the following formula:
Where:
P is the initial price = $ 34,000
n is the depreciation rate = 0.06
t is the elapsed time
The equation that models this situation is:
Now we want to know after how many years the car is worth less than $ 21500.
Then we do y = $ 21,500. and we clear t.
After 7.40 years it will be worth less than 21500