A sports car accelerates from rest to 91 km/h in 5.5 s. What is its average acceleration in m/s. Express your answer using two significant figures.
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- A garden snail named Archie, owned by Carl Branhorn of Pott Row, England, covered a 33-cm course in 2.0 min at the 1995 World Snail Racing Championships, held in Longhan, England (Fig. P1.13). Determine Archies average speed Sav = d/t in the appropriate SI units.An animals tracks are frozen in the snow (Fig. P2.2). Can these tracks be used to make a motion diagram? If so, what are the shortcomings of a motion diagram made from these data? If not, why not? Figure P2.2 Problems 2 and 41. A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 610 mi/h, how far is she from her starting position?Your answer is mi;Enter your answer rounded to two decimal places. 2. A steep mountain is inclined 74 degree to the horizontal and rises to a height of 3400 ft above the surrounding plain. A cable car is to be installed running to the top of the mountain from a point 880 ft out in the plain from the base of the mountain. Find the shortest length of cable needed.Your answer is ft
- A car is traveling at 30 m/s ( approximately 67 mph) on I-95 highway. The driver applies the brakes and the car comes to a stop in 4.0 s . What is the car's acceleration, in m/s2? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed.A runner completes the 200-meter dash with a time of 19.67 seconds. Part A What was the runner's average speed in meters per second? Express your answer to four significant figures. {—| ΑΣΦ Submit Part B X Incorrect; Try Again; 4 attempts remaining wwwww. Previous Answers Request Answer Submit What was the runner's average speed in miles per hour? Express your answer to four significant figures. ΤΙ ΑΣΦ Request Answer ? m/s mi/hThe following data were taken on five cars traversing a 1.6-km highway. Car Time (minutes) A 1.9 B 1.2 C 1.8 D 1.1 E 1.9 Determine the traffic density, in vehicles per km. Express your answer in 2 decimal places.
- During 55 successive 1.001.00 min intervals, a runner moves at the following constant speeds: 0.4000.400 km/min, 0.2000.200 km/min, 0.1100.110 km/min, 0.1100.110 km/min, and 0.3600.360 km/min. a.) Find the total distance traveled. b.) Find the average speed.A jet accelerates at a constant rate from rest, traveling 900 m in 3.0 s. What is the magnitude of its acceleration, in m/s?? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.If it takes a horse 175 seconds to make 3.00 laps around a horse track (each lap is equal to 1.00 km), what was the horse's average velocity in m/s when he crosses the start/finish line? Be sure to answer to the correct number of significant digits and include units.
- A bird flies 3.50 km [East] and then immediately turns around and flies 7.50 km [West]. The bird's average speed for the entire motion is 11.0 km/h. What is the bird's average velocity. Give your answer in km/h to 2 decimal places. A velocity that is west should be treated as negative and a negative sign should be included in your answer. A velocity that is east should be treated as positive but no sign should be included in the answer. Do not include units in your answer.The speed (m/s) an accelerating object is traveling is determined by the function v(d) = 9.8d + 8 where d is the distance the car has been accelerating. How fast (m/s) is the object traveling after 20 meters? Leave your answer without writing the units. 204The stopping distance for an automobile (after applying the brakes) is approximately F(s) = 1.1s + 0.054s? ft, where s is the speed in mph. Use the Linear Approximation to estimate the change in stopping distance per additional mph when s = 35. (Use decimal notation. Give your answer to two decimal places.) AF = ft Use the Linear Approximation to estimate the change in stopping distance per additional mph when s= 55. (Use decimal notation. Give your answer to two decimal places.)