questions in attahements

QUESTION 1 Refer to the 85-kg skateboarder gure below. Assume the following: (1) the system is conservative; (2) points A and F are 11.2 m above ground level; (3) skateboarder starts at rest from point A; and (4) zero height (ground level) is at point E. The kinetic energy at point E is QUESTION 2 Refer to the 85-kg skateboarder gure below. Assume the following: (1) the system is conservative; {2) points A and F are 11.2 m above ground level; (3) skateboarder starts at rest from point A; and (4) zero height (ground level) is at point E. The total mechanical energy at point E is QUESTION 3 Refer to the 85-kg skateboarder gure below. Assume the following: (1) the system is conservative; (2) points A and F are 11.2 m above ground level; (3) skateboarder starts at rest from point A; and (4) zero height (ground level) is at point E. The total mechanical energy at point C if point C is 5.0 m above ground level is QUESTION 4 The house, school, and diner are on the same street. The house is 820 ft from the school and 0.6 miles from the diner. Assume the positive direction is to the LEFT <. if you start at the school go to house and then diner in min. what is your average speed km two significant figures burgers malts o a. b. c. d. e. none of abovequestion are on same street. ft from miles diner. assume positive direction left head back hr. velocity cm a crane lifts n block vertically an acceleration rnfs2 through height m. net force g question constant c find total work done block. j . refer position vs. time graph for car. that t units hours x kilometers. .. e :.. .hours h over interval does car move with negative b-c d-e all intervals a-b c-d e-f o-aquestion b .1-2 im zero during exceed limit any circus performer launched out cannon lands level as launched. ignore air resistance. which following statements true true. vertical decreases way up due gravity. i increases down d horizontal distance increases. zero. ci has maximum height. object not zeroi its horizontal. false mass m held ground level. it released falls under influence gravity only. potential energy decreasing. identical blocks rest shown figure above. slides steeper ramp than both ramps frictionless. reach final indicated by lower dashed line labeled crosses finish greater less equal jupiter surface approximately times earth astronaut life support backpack weighs earth. weigh kg lead brick rests wooden table. applied required slide across table coefficient kinetic friction between these>