# lecture15 - PHYS 111 Midterm 1 Review A car starts at x=0 m...

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PHYS 111 Midterm 1 Review

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A car starts at x= 0 m and has the following velocity vs. time graph. Draw the corresponding position vs. time and acceleration vs. time graphs. v x t
A platform has a radius of 5 m and has an angular displacement as a function of time given by: (a) Is the platform turning clockwise or counterclockwise at t =0 s? (b) How long does it take for the platform to complete one revolution counterclockwise from t=0? (c) What is the total magnitude of acceleration for an object on the edge of the platform at t=5 s? θ ( t ) = 5 t 2 8 t

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A plane has an airspeed (i.e., speed with respect to the air) of v p = 100 m/s and is flying at an angle of 30° north of east. The wind is blowing at a velocity v w = (20 ˆ i 30 ˆ j ) m/s . We have defined the +x axis as pointing east. If the plane flies over a navigation beacon at t=0 s, how far is it from the beacon after 20 minutes?

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• Spring '11
• ERIC
• Mass, Velocity, English-language films, following velocity vs

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