Jacob is working on his physics portfolio and stands on a 0.45 m high step. if jacob’s mass is 103 kg, what is his potential energy while on top of the step? givens unkowns equation substitute solve if you could fill this in i will medal and give you brainliest answer, really struggling with this and could use a hand if you don't mind : )

Due sun 06/09/2019 11: 59 pm skip navigation questions correct q 1 [1/1] correct q 2 [1/1] correct q 3 [1/1] untried q 4 (0/1) untried q 5 (0/1) untried q 6 (0/1) untried q 7 (0/1) untried q 8 (0/1) untried q 9 (0/1) untried q 10 (0/1) grade: 3/10 print version start of questions two cyclists, 42 miles apart, start riding toward each other at the same time. one cycles 2 times as fast as the other. if they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?