What is the overall average acceleration

Reference no: EM1322221

Q1. A superhero flies 316 m from the top of a tall building at an angle of 23degrees below the horizontal. What are the horizontal and vertical components of the superhero's displacement?

(a) Starting from rest, the car is going 32ft/s (22 mi/h) at the end of 5.0 s. What is the car's average acceleration in ft/s2?

(b) In 4.0 more seconds, the car is going 64ft/s (44 mi/h). What is the car's average acceleration for this time period?

(d) What is the overall average acceleration for the total time?

Q2. A person driving her car at 57km/h approaches an intersection just as the traffic light turns yellow. She knows that yellow light lasts only 2.0 s before turning to red, and she is 30m away from the near side of the intersection. The intersection is 15m wide. Her car's maximum deceleration is -5.4m/s2, whereas it can accelerate from 57km/h to 70km/h in 3.9 s. overlook the length of her car and her reaction time.

Reference no: EM1322221

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