Explain why a left-most derivation of any string in the language defined by G is also a right-most derivation.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s