A typical reaction time to get your foot on the brake in your car is 0.2 seconds. If you are traveling at a speed of 82 kph, what distance will your car travel during this reaction time? Express your answers in meters.
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A typical reaction time to get your foot on the brake in your car is 0.2 seconds. If you are traveling at a speed of 82 kph, what distance will your car travel during this reaction time? Express your answers in meters.
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- An inverted conical container has a diameter of 39 inches and a depth of 22 inches. If water is flowing out of the vertex of the container at a rate of 39π in3/sec, how fast in in/sec is the depth of the water dropping when the height is 9 in? Express your answer in 3 decimal places.What role does reaction time play in applying the brakes to your car in emergency situations? Assume your car is traveling at 100 kph when a pedestrian suddenly crosses the street in front of your car. How far will your car travel before you can apply the brakes? Show your solution.What is the likelihood of running over the pedestrian? (Assume that you can bring the car to a stop in 10 m once you step on the brakes when you are driving at 50 kph.)Suppose you want to design an air – bag system that can protect the driver in a head on collision at a speed of 100 kph. Estimate how fast the air bag must inflate to effectively protect the driver. Assume the car crumples upon impact over a distance of about 1m. How does the use of the seat belt help the driver?
- Find the total distance (m) traveled by a car from the time he saw a hazard until he applied the brakes. He was travelling at 43 kph with perception-reaction time of 2.1 seconds. The skid resistance is 0.17 with 84% efficiency. Express your answer in 2 decimal places.A car traveling at 30 m/sec has wheels with 75cm diameters. Find: angular speed of wheels, if the car stops in 5 sec, what is angular acceleration? how many revolutions do the wheels turn before stopping?Activity 1. An automobile has a speed of 90 km/hr when the brakes are applied. The car is slowed down at the rate of 4 m/s2. What time is required to stop the car, and how far will it travel before stopping?
- In traveling a distance of 3 km between points A and D, a car is driven at 100 km/hr from A to B for t seconds. If the brakes are applied for 4 sec between B and C to give a car uniform deceleration from 100 kmph to 60 kmph and it takes ' t ' seconds to move from C to D with a uniform speed of 60 kmph, determine the value of ' t '.Which car shows the least and greatest acceleration?A car owner decides to upgrade from tires with a diameter of 60.75cm to tires with a diameter of 65.25cm. If he doesn’t update the on-board computer, how fast will he actually be traveling when the speedometer reads 105 kph?
- Assume your car is traveling at 100 kph when a pedestrian suddenly crosses the street in front of your car. How far will your car travel before you can apply the brakes? Show your solution. What is the likelihood of running over the pedestrian?(Assume that you can bring the car to a stop in 10 m once you step on the brakes when you are driving at 50 )Calculate the standard deviation for these speeds of city traffic: 10 km/hr, 15 km/hr, 35 km/hr, 40 km/hr, 30 km/hr. Express your answers in the proper units of measurement and round to the nearest whole number.1. From a speed of 90 kph, a car accelerates at the rate of 10m/min/sec along a straight road . At the end of 30 seconds. What is the final velocity of the car in m/sec? 2. Determine the distance