What is the final speed of a train which accelerates uniformly at a rate of 0.6m/s from a speed of 2/ms for 30s

What object a collides with object b and bounces back its final momentum is?

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

Why is no-till farming more sustainable than many traditional methods of farming