2/7/2017Homework 3Homework 3Due: 11:00pm on Tuesday, January 24, 2017You will receive no credit for items you complete after the assignment is due.Grading PolicyProblem 4.6A skateboarder travels on a horizontal surface with an initial velocity of 3.6toward the south and a constant acceleration of 2.1toward the east. Letthedirection be eastward and thedirection be northward, and let the skateboarder be at the origin at.Part AWhat is herposition at?Express your answer to two significant figures and include appropriate units.CorrectPart BWhat is herposition at?Express your answer to two significant figures and include appropriate units.ANSWER:CorrectPart CWhat is hervelocity component at?Express your answer to two significant figures and include appropriate units.Part DWhat is hervelocity component at?Express your answer to two significant figures and include appropriate units.Part AHow much time does the pilot have to make the altitude change without crashing into the hill?Express your answer to two significant figures and include appropriate units.3.2

2/7/2017Homework 3

Part BWhat minimum, constant, upward acceleration is needed in order to clear the hill?Express your answer to two significant figures and include appropriate units.

What is the horizontal component of the balloon’s velocity at the instant that it clears the top of the hill?Express your answer to two significant figures and include appropriate units.

What is the vertical component of the balloon’s velocity at the instant that it clears the top of the hill?Express your answer to two significant figures and include appropriate units.

For the motion diagram given , sketch the shape of the corresponding motion graphs in Parts A to D.Use the indicated coordinate system. One unit of time elapses between consecutive dots in the