A Car Is Traveling at 120 Km/h (75 Mph)

question 66

Multiple Choice

A car is traveling at 120 km/h (75 mph) .When applied the braking system can stop the car with a deceleration rate of 9.0 m/s².The typical reaction time for an alert driver is 0.5 s versus 2 s for a sleepy driver.Assuming a typical car length of 5 m,calculate the number of additional car lengths it takes the sleepy driver to stop compared to the alert driver.

• A)13
• B)3.0
• C)10
• D)16
• E)26

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Definitions:

Per-unit Cost

The cost incurred to produce, maintain, or sell one unit of a product or service, calculated by dividing total costs by the number of units.

Mixed Cost

A cost that contains both variable and fixed cost elements, making its total expense vary with activity level but not in direct proportion.

Maintenance Costs

Expenses associated with the upkeep of buildings, equipment, machinery, or vehicles to ensure proper functionality and efficiency.

Machine Hour

A measure of the amount of time a machine is operated, used in calculating manufacturing costs and efficiency.