Alvin and Simon shared £540 in the ratio 4:5
1 answer:
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Answer:
<em>The red car will need 4 minutes to overtake the blue car.</em>
Step-by-step explanation:
<u>Constant Speed Motion</u>
When an object travels equal distances in equal times, it's said to have a constant speed.
The speed is the ratio between the distance d and time t.
If the speed is known, we can solve the equation for d:
d = v.t
Similarly, the time is calculated as:
In the race, the red car starts 1 Km behind a blue car. The red car travels at 55 Km/h and the blue car travels at 40 Km/h. Since the red car moves faster, it will eventually overtake the blue car.
The difference in speeds between both cars is 55 - 40 = 15 Km/h.
That relative speed makes both cars to get closer until the head start is overtaken. Thus, the time needed for both cars to meet is:
t = 0.0667 hours.
Computing in minutes:
t = 4 minutes.
The red car will need 4 minutes to overtake the blue car.