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2. A car starts from rest at a stop sign. It accelerates at 2.5 m/32 for until it reaches a speed of 50 km/hr. (1 km/hr .278 m/s) (a) Draw a picture of this problem (not a motion diagram but a picture!) clearly indicate on your picture where you call x-0, t-0 i.e. establish a coordinate ystem. Label it with symbols representing initial positon, initial velocity, final position final time, final velocity and acceleration and include all the information you know and dont know on your picture. 14 points) Known Find b) List the known and find information and convert your speeds to m/s. (6 points) (c) How long does it take for the car to reach its final velocity? STATE YOUR EQUATION and show all work (4 points) (d) Asses your answer. Explain! In your explanation make sure you answer the following questions Did you get the correct units? Did you get the correct sign? Is it the right magnitude or size? (3 points)
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