The windshield wiper of a car is 18 inches long. It takes 5 seconds to trace 1/3 revolution.a) What is the angular speed? (exact form)b) What is the linear speed? (round to the hundredths)
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Q: The windshield wiper of a car is 18 inches long. It takes 5 seconds to trace 1/3 revolution. a) What is the angular speed? (exact form) b) What is the linear speed? (round to the hundredths) A: a) What is the angular speed? (exact form) angular speed can measured in many forms: revolutions/sec, rotations/sec, radians/sec, degrees/sec, revolutions/min, rotations/min, radians/min, degrees/min, revolutions/hour, rotations/hour, radians/hour, degrees/hour, etc. You did not specify the units required in your answer, so I will assume the time unit will stay seconds. Angular Speed? Take your pick of: ? rev/5 sec 1/15 rev/sec 2π/15 radians/sec 24?/sec A: b) What is linear speed? (round to the hundredths) I will assume you want the linear speed at the TIP of the blade? 1/15 rev/sec (1/15)(2πr) inches/sec (1/15)(2π)(18) inches/sec 2.4π 7.539822 7.54 in/sec (n 100th) Hope this helps! Cheers! ? .
