What is the minimum average speed needed for a car to qualify in a drag race?

In summary, to qualify for a race, a car must achieve an average speed of 254 km/hr on a 1600 meter track. If a car covers half the track with an average speed of 227.5 km/hr, it must have a minimum average speed of 280.5 km/hr for the second half to qualify. This can be calculated by using the formula speed=distance/time and finding the time it took for the first half (12.6 seconds), and then solving for the total time for the entire trip.
  • #1
hannah2329
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Homework Statement



to qualify for a race a car must achieve an average speed of 254 km/hr on a track 1600 meters long. if a car covers half the track with an average speed of 227.5 km/hr what minimum average speed must it have the second half to qualify?

Homework Equations


speed=distance/time


The Attempt at a Solution


my teacher told us to find the time it took for the first half and i did that by converting 227.5km/hr and getting 63.19m/s=800/t and got 12.6 seconds for the first half. he told us we could use this to solve the problem but I am really confused on how to do that.
 
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  • #2
If the average speed must be 254 km/hr for the 1600 m trip, what must be the total time for the trip?
 
  • #3
thank you! i got it right!
 

1. What is drag race qualifying velocity?

Drag race qualifying velocity is the measure of how fast a vehicle can travel down a straight track, typically 1/4 mile in length, during a qualifying run in a drag race competition. It is used to determine the order in which vehicles will line up for the actual race.

2. How is drag race qualifying velocity measured?

Drag race qualifying velocity is measured by timing how long it takes for a vehicle to cover a specified distance, typically 1/4 mile, from a standing start. The time is then converted to a velocity in miles per hour (mph).

3. What factors affect drag race qualifying velocity?

There are several factors that can affect drag race qualifying velocity, including the type of vehicle, engine power and torque, aerodynamics, tire grip, track conditions, and weather conditions. The skill of the driver also plays a significant role.

4. How important is drag race qualifying velocity in determining the outcome of a race?

Drag race qualifying velocity is important in determining the starting order of vehicles for the race, but it does not necessarily determine the outcome of the race. Other factors such as reaction time, consistency, and overall performance of the vehicle during the race also play a crucial role.

5. How do drag racers improve their qualifying velocity?

Drag racers can improve their qualifying velocity by making modifications to their vehicle, such as increasing engine power, improving aerodynamics, and using better tires. They can also work on their driving skills and techniques, as well as making adjustments to the vehicle's setup for optimal performance on the track.

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