How long it takes for a car to catch a truck

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In summary, the car is traveling 10 km/hr faster than the truck and it will take 72 seconds for it to reach the truck, assuming no other factors affect their speeds.
  • #1
Pioneer98
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Homework Statement


A car traveling 91 km/h is 200m behind a truck traveling 81 km/h . How long will it take the car to reach the truck?

Homework Equations





The Attempt at a Solution

 
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  • #2
Pioneer98 said:

Homework Statement


A car traveling 91 km/h is 200m behind a truck traveling 81 km/h . How long will it take the car to reach the truck?

Homework Equations



The Attempt at a Solution

Hello Pioneer98. Welcome to PF !

What have you tried?

Where are you stuck?
 
  • #3
I'm actually not even sure where to start. My professor gave us four kinematic equations to memorize and use. I know how to use those, but the things he went over in class are totally different from the online homework.
 
  • #4
Motion is always relative. The car is traveling at 10 km/hr faster than the truck. How long will it take to cover 200 m?
 
  • #5
20 seconds?
 
  • #6
Pioneer98 said:
20 seconds?
That would be true if car were traveling 10 m/s faster than the truck. Units matter !

Convert 10 km/hr to m/s .
 
  • #7
10,000 m/hr, 2 7/9 m/s, so it takes 72 seconds for the car to reach the truck. Thanks for the help guys!
 

1. How long does it typically take for a car to catch a truck?

The amount of time it takes for a car to catch a truck depends on various factors such as the speed of the car and the truck, the distance between them, and any traffic or road conditions. Generally, it can take anywhere from a few seconds to several minutes for a car to catch a truck.

2. Does the size and weight of the car and truck affect the time it takes for the car to catch the truck?

Yes, the size and weight of the car and truck can play a significant role in the amount of time it takes for the car to catch the truck. A smaller and lighter car may be able to accelerate and catch a heavier truck faster than a larger and heavier car.

3. Can the speed of the car and truck affect the time it takes for the car to catch the truck?

Absolutely. The speed of the car and truck is one of the most important factors in determining how quickly the car can catch the truck. A car traveling at a higher speed will be able to catch a truck faster than a car traveling at a lower speed.

4. Are there any safety concerns when a car is trying to catch a truck?

Yes, there can be safety concerns when a car is trying to catch a truck. It is essential for the driver of the car to be cautious and aware of their surroundings, as well as to maintain a safe distance from the truck while trying to catch it.

5. Is it possible for a car to catch a truck that is traveling at a much higher speed?

In most cases, it is not possible for a car to catch a truck that is traveling at a much higher speed. However, if the car has a significant speed advantage and the truck is slowing down or in heavy traffic, it may be possible for the car to catch the truck.

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