a. How much mechanical energy was converted to intemal energy when the skier travels down the slope from point A to point B? Answer in Joules.

In part (a) of the solution you have: 22 = (.5)V (8 + 2) I understand that 22 is total displacement, and 8 is the total seconds but where did you get the 2 from in (8 + 2)?

Problem 8: Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of v= 4.4 cm/year. What distance d, in meters, does the plate move in 1.6 seconds at this speed?

How long did it take the object to get from the position z = 2.0 m to the position z = 3.0 m? Express your answers using two significant figures. Enter your answers in ascending order separated by commas. ? Symbols < 1 of 1 At = Your submission doesn't have the correct number of answers. Answers should be separated with a comma. No credit lost. Try again. x (m) Submit Previous Answers Request Answer Provide Feedback 2 1 t (s) 100 20 40 60 80

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Please answer part A and B with explanation

A Ferris wheel with radius 8.5 m initially rotates clockwise at a constant rate by completing 1.25 rev in 40.00 s.  It then begins to decelerate at a rate of 0.40 rad/s2 with its only passenger at the top of the wheel.  Find the direction of the total acceleration vector.  Express your answer as a positive number with respect to the positive x-axis.  Choose up and to the right as your positive direction.

NASA has fired a rocket straight up into the air from ground level with an unknown initial velocity. It reaches a maximum height of 164,000 feet. This happened in Cape Canaveral therefore the rocket is under the acceleration of Earth's gavity in which we all know is -32 ft/sec/sec.                                           Please round your answers to two decimal places. a). Find the time it takes for the rocket to reach maximum height. b). find the initial velocity necessary to reach that height.

Bipin

A cannonball is shot with an initial speed of 66 m/s and 37.0º angle with respect to the ground. How long does it take for the ball to reach its the maximum height, in seconds? Use g = 10.0 m/s2. Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.