A human-powered vehicle (HPV) team wants to model the acceleration during the 260-m sprint race (the first 60 m is called a flying start) using a = A - Cv, where a is acceleration in m/s? and v is the velocity in m/s. From wind tunnel testing, they found that C = 0.0012 m1. Knowing that the cyclist starts from rest and is going 110 km/h at the 260-meter mark, what is the value of A?
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- A race car completes a lap on a 1600 m long track with an average speed of 250 km/h. If the car's average speed on the first half of the track was 230 km/h, what was its average speed (in km/h) on the second half?The acceleration due to gravity at Earth's surface is 9.80 m/s2. What is the acceleration at altitudes of 100 km?An object moves along a straight line and experiences a constant acceleration of +1.36 cm/s2. At t = 4.6 s, its velocity is -3.41 cm/s. Express your answers in cm/s. What was the object’s velocity at t = 1.86 s?
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