. Two football players move in a straight line towards one another in a straight line. Their equations of motion are as follows. X, = .1 m +(-3.1 m/s) * X = -6.3 m + (2.8 m/s) *t a) Which player is moving faster?

b) At what time do the two players collide?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)