A Mars rover traveled from point A to point B at a speed of 4 cm/sec. Worsening conditions during the return trip caused the rov
er to travel at a speed of 2.5 cm/sec, and increased travel time by 15 minutes. What is the distance between point A and point B?
1 answer:
Using the speed - time relation, the distance between point A and B is 6000 cm
Recall :
- Distance = speed × time
- Time = distance / speed
Let ; the time taken = t ; distance = d
<u>To trip</u> :
<u>Fro trip</u> :
- t is in seconds ; 15 minutes = (15×60) = 900 seconds
d = 2.5(t + 900)
d = 2.5t + 2250 - - - - - (2)
Equating (1) and (2)
4t = 2.5t + 2250
Collect like terms
4t - 2.5t = 2250
1.5t = 2250
t = 2250 / 1.5
t = 1500 seconds
Hence, distance = 4(t) = 4(1500) = 6000 cm
Therefore, the distance between the points is 6000 cm
Learn more : brainly.com/question/25203683
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