Amotorcycle that is slowing down uniformly. the motorcycle covers 1 =1000 m in 80 sec⁡. the motorcycle then covers the next 1 =1000 m in 120 sec⁡. calculate (a) the acceleration of the motorcycle and (b) its velocity at the beginning and end of the 2 km trip.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Which bonds are found inside a water molecule

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.