A transport team carries 64.5 tons of goods in the first day, 18.5 tons more in the second day than in the first day, and three times more in the third day than in the previous two days. How many tons of goods are transported in the three days?

The second day freight: 64.5 + 18.5 = 83 (tons); the third day freight: (64.5 + 83) × 3, = 147.5 × 3, = 442.5 (tons); three days total freight: 64.5 + 83 + 442.5 = 590 (tons). Answer: three days total freight 590 tons

A transport team carries 84.5 tons of goods on the first day, 18 tons more than on the second day and 57.5 tons less than twice on the third day?

[84.5 + (84.5-18) + (84.5 + 57.5) △ 2] / 3, = [84.5 + 66.5 + 71] / 3, = 222 △ 3, = 74 (tons). A: the average daily freight is 74 tons

The car is subject to resistance F. when it accelerates at speed V and acceleration a, the actual power of the engine is higher than the rated power. How will the acceleration and speed of the car change
Senior one physics compulsory 2 page 58 question 4

Suppose the mass of the car is mkg
A＝（P/V-F）/M
Because V is increasing, a will decrease until a = 0. At this time, P / v = F
Finally, V reaches the maximum value, v = P / F

What are the changes of traction force F and acceleration a when the car is running on a straight road?
If the power of the engine remains constant, what are the changes of the traction force F and the acceleration a during the acceleration process?
Why is f decreasing and a decreasing?

Power P = f * s / T = f * V
The power of the engine remains constant, P remains unchanged, and the traction F of the vehicle decreases with the increase of V
A = (f-f) / m, the resistance f remains unchanged, f decreases and a decreases

A transport team carries 64.5 tons of goods in the first day, 18.5 tons more in the second day than in the first day, and three times more in the third day than in the previous two days. How many tons of goods are transported in the three days?