15 pts! ! brainliest! explain how force or contact area affects pressure in each application. 1) the point of a sewing needle 2)the length of cross-country skis 3) a vehicle compactor 3) a skate blade

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.