Answer:
1800 J
Step-by-step explanation:
At point A when the cart is not in motion, it only has potential energy.
We know that potential energy is given by mgh where m is the mass of the cart, g is acceleration due to gravity and h is the height.
Substituting 12 kg for m, 10 m/s2 for g and 15 m for h then
PE= 12*10*15=1800 J
We will break down the 415
3(415) =
3(400) + 3(10) + 3(5) =
1200 + 30 + 15 =
1245
Answer: slope = 
Step-by-step explanation:
2789.73 cm!! hope this helps
Lower quartile=25% of total frequency/numbers in the data set
Median=50% of total frequency/numbers in the data set
Upper quartile=75% of total frequency/numbers in the data set
Hope this helps:)