The distance it takes to stop a car varies directly as the square of the speed...
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The
distance it takes to stop a car varies directly as the square of
the speed...
10. The time,t,in seconds varies directly with the square root of the distance, d, in feet...
10. The time,t,in seconds varies directly with the square root of the distance, d, in feet that a dropped ball has fallen. It takes 2 seconds for a ball to fall 64 feet. a. Find a formula to model this situation. b. How long would it take for the ball to fall 100 feet?
If it takes 100m to stop a car initially moving at 100 m/s what distance is...
If it takes 100m to stop a car initially moving at 100 m/s what distance is required to stop a car moving at 200 m/s under the same condition? Show work using energy equations only. a. 50m b. 100m c. 200m d. 400m
The distance required for a car to come to a stop will vary depending on how...
The distance required for a car to come to a stop will vary depending on how fast the car is moving. Suppose that a certain car traveling down the road at a speed of 20 m/s can come to a complete stop within a distance of 80 m. Assuming the road conditions remain the same, what would be the stopping distance required for the same car if it were moving at speeds of 10 m/s, 40 m/s, or 5 m/s...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and ski...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and skids to a stop, the length of the skid marks (in feet) is given by the formula L0.000 013 3xy2 where x is the weight of the car (in pounds) and y is the speed of the car (in miles per hour). What is the average length of the skid marks for cars weighing between 2,000 and 3,000 pounds and traveling at speeds...
Gas mileage actually varies slightly with the driving speed of a car (as well as with...
Gas mileage actually varies slightly with the driving speed of a car (as well as with highway vs. city driving). Suppose your car averages 31 miles per gallon on the highway if your average speed is 54 miles per hour, and it averages 29 miles per gallon on the highway if your average speed is 69 miles per hour. Answer parts (a) and (b) below. a. What is the driving time for a 3000-mile trip if you drive at an...
t varies directly as the square root of l
t varies directly as the square root of l. If l=81, then t=10 what is the constant proportion?1. a is directly proportional to b. If a = 15, then b = 92. M varies directly as n. If n = 2/3, then m = 1/43. T varies as the square root of L. If L = 81, then T = 104. Z is proportional to the cube of d. If d = 2 then z = 55. f varies directly...
A car is traveling at a speed of 53 feet per second. (a) What is its...
A car is traveling at a speed of 53 feet per second. (a) What is its speed in kilometers per hour? km/h (b) Is it exceeding the 40 mile per hour speed limit? O Yes No
A car travels in a straight line covering a total distance of 90.0 miles in 60.0...
A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes. Which one of the following statements concerning this situation is necessarily true? a. b. C. d. e. The average velocity of the car is 90.0 miles per hour in the direction of motion The speed of the car must be 90.0 miles per hour throughout the entire trip The velocity of the car is constant. The acceleration of the car must be non-zero....
Questions about a 700 kg car: 1.) What is the work required (in J) to stop...
Questions about a 700 kg car: 1.) What is the work required (in J) to stop the car if it is going 20 m/s and stops in a distance of 35m? 2.) Now suppose the car were traveling 40 m/s. What is the work required (in J) to stop it? 3.) What distance (in m) is required for the car in the previous provlem to stop when traveling 40 m/s? Thanks
The minimum distance required to stop a car moving at 35.0 mph is 40.0 ft. What...
The minimum distance required to stop a car moving at 35.0 mph is 40.0 ft. What is the minimum distance, in meters, for the same car moving at a speed of 70.0 mph assuming it has the same constant acceleration? Find your acceleration in units of m / s^2 first.
10. The time,t,in seconds varies directly with the square root of the distance, d, in feet that a dropped ball has fallen. It takes 2 seconds for a ball to fall 64 feet. a. Find a formula to model this situation. b. How long would it take for the ball to fall 100 feet?
The distance required for a car to come to a stop will vary depending on how fast the car is moving. Suppose that a certain car traveling down the road at a speed of 20 m/s can come to a complete stop within a distance of 80 m. Assuming the road conditions remain the same, what would be the stopping distance required for the same car if it were moving at speeds of 10 m/s, 40 m/s, or 5 m/s...
51. Safety research Under ideal conditions, if a person driving a car slams on the brakes and skids to a stop, the length of the skid marks (in feet) is given by the formula L0.000 013 3xy2 where x is the weight of the car (in pounds) and y is the speed of the car (in miles per hour). What is the average length of the skid marks for cars weighing between 2,000 and 3,000 pounds and traveling at speeds...
Gas mileage actually varies slightly with the driving speed of a car (as well as with highway vs. city driving). Suppose your car averages 31 miles per gallon on the highway if your average speed is 54 miles per hour, and it averages 29 miles per gallon on the highway if your average speed is 69 miles per hour. Answer parts (a) and (b) below. a. What is the driving time for a 3000-mile trip if you drive at an...
A car is traveling at a speed of 53 feet per second. (a) What is its speed in kilometers per hour? km/h (b) Is it exceeding the 40 mile per hour speed limit? O Yes No
A car travels in a straight line covering a total distance of 90.0 miles in 60.0 minutes. Which one of the following statements concerning this situation is necessarily true? a. b. C. d. e. The average velocity of the car is 90.0 miles per hour in the direction of motion The speed of the car must be 90.0 miles per hour throughout the entire trip The velocity of the car is constant. The acceleration of the car must be non-zero....
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