Question: During the Daytona 500 race, cars complete exactly 200 laps of a 2.50

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Question: During the Daytona 500 race, cars complete exactly 200 laps of a 2.50 mile long track. The record time to complete the race,held by Buddy Baker, is 2 hours, 48 minutes, 55 seconds.

A) Calculate Buddy Bakers average speed in miles per hour

B)Calculate Buddy Baker's average speed in ms-1 C) Calculate Buddy Bakers average velocity in ms-1 D)If Buddy Baker drove at an exactly constant speed for one lap, was his instantenous acceleration zero through out the lap? Please explain each step very clearly to help me study Question: During the Daytona 500 race, cars complete exactly 200 laps of a 2.50 mile long track. The record time to complete the race,held by Buddy Baker, is 2 hours, 48 minutes, 55 seconds.

A) Calculate Buddy Bakers average speed in miles per hour

B)Calculate Buddy Baker's average speed in ms-1 C) Calculate Buddy Bakers average velocity in ms-1 D)If Buddy Baker drove at an exactly constant speed for one lap, was his instantenous acceleration zero through out the lap? Please explain each step very clearly to help me study D)If Buddy Baker drove at an exactly constant speed for one lap, was his instantenous acceleration zero through out the lap? Please explain each step very clearly to help me study

Explanation / Answer

The length of the track is l = 2.5 mil
The number of laps travelled n = 200
The total distance travellled d = 200*2.5 mil
= 500 mil
= 804670 m
The time to complete the race t = 2 hr 48 min 55 s
= 2.8153 hr
= 10135 s

A)
Average speed = total distance travelled / total time taken
= 500 mil / 2.8153 hr
= 177.6 mi/h

B)
Average speed = total distance travelled / total time taken = 804670 m/10135 s = 79.4 m/s C) Average velocity = total displacement / total time taken As the race finished at thestarting point (after 200 laps) the total displacement is zero. Which results in the average velocity to be zero D) The instantaneous acceleration at any given time is the ratio of change in speed to the time As the car moves with a constant speed throughout the lap, the instantaneous acceleration at any time in the lap will be zero. (no change in speed)

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