Part b. Step 1 Determine the change in position during the 8.00 seconds. x=x() +
ID: 1873855 • Letter: P
Question
Part b. Step 1 Determine the change in position during the 8.00 seconds. x=x() + Vol + _ at 2 x=0+(5.00 m/s)(8.00 s) +40.25 m/s2 )(8.00 s)2 x 80.0 m EXAMPLE PROBLEM 2. (Sections 2-5 and 2-6) A car is traveling at the posted speed limit of 15.0 miles per hour (6.70 m/s) in a school zone. The driver applies the brakes, and the car decelerates a a constant rate of 5.00 m/s2 until coming to a halt. (a) Calculate the distance the car travels while decelerating. (b) Calculate the distance required to stop if the car is initially traveling at 30.0 miles per hour (13.4 m/s). Part a. Step. , -5.00 m/sExplanation / Answer
According to the given problem,
a) Using the kinamatic equation of motion,
v2 - u2 = 2aS
02 - 6.72 = 2*(-5)*S
S = 4.489 m
S = 4.5m.
b) Using the same relation,
v2 - u2 = 2aS
02 - 13.42 = 2*(-5)*S
S = 17.956 m
S = 18m.
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