A motor cycle is moving at a constant speed of 40 km/h how long does it take the motorcycle to travel a distance of 10 km?

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

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above