Which of the following statement is correct? a) Average speed > Instantaneous speed b) Average speed >= Instantaneous speed c) Average speed <= Instantaneous speed d) Average speed < Instantaneous speed
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Which of the following statement is correct?
a) Average speed > Instantaneous speed
b) Average speed >= Instantaneous speed
c) Average speed <= Instantaneous speed
d) Average speed < Instantaneous speed

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- 1#2 Chapter 2 - The Derivative Function 89 The distance a person can walk in time t is given by d =vt where d is measured in miles and t is measured in hours. %3D a) Find the average velocity from t= 1 tot=4 hours. b) Estimate the person's velocity at t = 4 hours. A ball is dropped from a tall building and d is the number of feet it falls in t seconds. The following table shows some of the values of t and d. t (sec) 1 3. 4. 0. 0. d (ft) 15.07 57.90 | 127.03 201.76 |333.00 a) Plot the six data points. Label the axes and indicate the units that are being used. b) The slope of any secant line on the graph is a measure of velocity. Why? of the follin g bell ot t c) Make throo aAn object's position is described by the following polynomial for 10 s=t^3 - 12t^2 + 24t where s is in meters and t is in seconds. Determine the following: a. the object's velocity as a function of time b. the object's acceleration as a function of time c. the time when the object was at the origin (s=0m) d. the object's average velocitya)Determine the magnitude of the acceleration for the speeding up phase. b)Determine the magnitude of the acceleration for the slowing down phase.
- If we apply the above equations to the case of an object that does not change its direction of travel as it moves with constant acceleration, we find that the object: Undergoes a displacement Ax = x- x, . Note that displacement is a positive quantity if x > x, and a negative quantity if x < x,. Has average velocity v = (x - x )/t = (v + vo)/2. Note that velocity has the same sign as displacement. Travels distance d = |Ax| = |x – x,| . Note that distance is always a positive quantity. Has average speed d/t . Note that speed is always a positive quantity. Has constant acceleration a = (v – vo)/t . Acceleration may be positive or negative, depending on how velocity changes. - Xo For the case of an object that does change its direction of travel as it moves with constant acceleration, which of the quantities listed above are different? Question6) A car travels 120 Km at 80 Km/h and 70 Km at 100 Km/h. What is the average speed of the car? A) 91.1Km/h B) 89.6Km/h C) 96.4Km/h D) 84.6Km/hデジタル形式で段階的に解決 ありがとう!! SOLVE STEP BY STEP IN DIGITAL FORMAT • Estimate the average speed of the Apollo spacecraft in meters per second, given that it takes the spacecraft five days to reach the Moon from Earth. (The Moon is 3.8x108 m from Earth.)
- A car goes at 60 mph for 2 hours from point O and then it takes 3 hours to get back to point O. a) Find the average velocity for the entire trip. b) Find the average velocity for the first 3 hours. c) Find the average speed for the whole trip.A car is traveling at a steady 88km/h in a 50km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.6 a)How much time elapses before the motorcycle is moving as fast as the car? b)How far is the motorcycle from the car when it reaches this speed?Describe the difference between someone who is accelerating and someone who is only moving at a constant velocity. A person moving a constant velocity will ‘feel’ how fast they are moving. A person accelerating does not feel the acceleration. A person who is accelerating will ‘feel’ that acceleration, but the person moving at constant velocity will not feel the motion. Both of the above. None of the above.