Along the slope of 1000m long and 250m high, a mine car weighing 6 times 10 cubic n is driven from the slope at the speed of 2m per second If the pulling force is 2 times the third power of 10, find the time from the bottom of the slope to the top of the slope; (2) the work done by Larry; (3) the work done by pulling force

Along the slope of 1000m long and 250m high, a mine car weighing 6 times 10 cubic n is driven from the slope at the speed of 2m per second If the pulling force is 2 times the third power of 10, find the time from the bottom of the slope to the top of the slope; (2) the work done by Larry; (3) the work done by pulling force

1. T = s / v = 1000m / (2m / s) = 500s 2. 2. W (have) = GH = 6000N × 250m = 1500000j 3. P = w / T = 1. 5 × 10, the sixth power J / 500s = 3000W 4. η = w (have) / w (total) = w (have) / Fs = 1500000j / 2000N × 1000m = 75%. Is that clear enough? If you don't give me any more reason

In the shape of [2x-1]

A:
Divide it into two inequalities to form a system of inequalities
2x－1

The solution set of inequality 4x-3 greater than 2x + 5 is

X > 4