You drive on Interstate 10 from San Antonio to Houston, onehalf the time at 35.0 mi/h km/h) and the other half at 55.0 mi/h km/h). On the way back you travel one- half the distance at 35.0 mi/h and the other half at 55.0 mi/h. What is your average speed (a) from San Antonio to Houston, (b) from Houston back to San Antonio, and (c) for the entire trip?
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- A car travels between city A and city B, a distance of 45miles at an average speed of 50 mph. on the return journey the average speed is 40 mph. Calculate the average speed for the total journey of city A to city B to city A.You walk from home due east to school to get a book, and then you walk back west to visit a friend. The figure shows your distance D, in yards, east of home as a function of the time t, in minutes, since you left home. (a) How far away is school? yd(b) At what time do you reach school? The school is first reached in about minutes.(c) At what time(s) are you a distance of 900 yards from home?You are first 900 yards away from home at about minutes and then again at about minutes.(d) Compute the average rate of change in D over the interval from t = 0 to t = 3. yd/minCompute the average rate of change in D over the interval from t = 3 to t = 6. yards per minuteCompute the average rate of change in D over the interval from t = 6 to t = 9. yards per minute(e) How is this related to the shape of the graph over the interval from t = 0 to t = 9? This part of the graph ---Select--- concaves down is a straight line concaves up . (f) At what time are you walking back west the fastest?You…A high-tech drone flies over Miami, FL in a direction 50.4 west of north with a speed of 35.4 km/h. Three hours later, the drone suddenly shifts due north, and its speed slows to 19.2 km/h. How far (in kilometers) from Miami, FL is the drone 4.50 h after it passes over the Miami. Round your answer to 0 decimal places.
- If it usually takes you three hours to arrive to Aqaba (from Amman) using a passenger car with amax. Speed of 100km/hr, estimate the time you need to reach to the same point if you own thisvehicleSuppose that you drive the 10.0 km from your university to home in 20.0 min. Calculate your average speed (a) in kilometersper hour (km/h) and (b) in meters per second (m/s). (Note: Average speed is distance traveled divided by time of travel.)A certain car can go from 0 to 60.0 mi>h in 7.40 s. What is the average acceleration ofthis car in meters per second squared?
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- An automobile traveling 95 km/hkm/h overtakes a 1.40 kmkm -long train traveling in the same direction on a track parallel to the road. A) If the train's speed is 75 km/hkm/h, how long does it take the car to pass it in minutes? Express your answer to two significant figures and include the appropriate units. B) How far will the car have traveled in this time? Express your answer to two significant figures and include the appropriate units. C) How long does it take the car to pass the train if the car and train are traveling in opposite directions in minutes? Express your answer to two significant figures and include the appropriate units. D) How far will the car have traveled in this time? Express your answer to two significant figures and include the appropriate units.A motorist goes for a drive, keeping the reading on the speedometer at a constant value of 40km/h. The speedometer is assumes to be accurate to +/- 2km/h. At the end of the day he wants to know how far he has travelled, but unfortunately, he forgot to look at the distance indicator when he set out. He thinks that he drove for four hours, give or take a quartee of an hour. Estimate how far he travelled and assign an error to your result.Tectonic plates are large segments of the earth's crust that move slowly. Suppose one such plate has an average speed of 3.0 cm per year.(a) What distance does it move in 97 seconds at this speed?m(b) What is its speed in miles per million years?mi/My