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18 July, 04:44

A scientist builds a Mars rover that can travel 4.9 centimeters per second on flat ground.

If the rover continues at the same rate, how many centimeters will it travel in 15 1/2 seconds?

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Answers (2)
  1. 18 July, 05:53
    0
    Step-by-step explanation:

    distance = time * speed

    4.9 = 1 second * speed

    speed = 4.9/1 = 4.9 cm/sec

    time = 15 1/2 = 31/2

    distance = 31/2 * 4.9 = 75.95 cm
  2. 18 July, 06:28
    0
    75.95cm

    Step-by-step explanation:

    4.9 multiplied by 15 will represent the 15 seconds

    4.9 • 15 = 73.5

    4.9 divided by 2 will equal the 1/2 seconds

    4.9 : 2 = 2.45

    add them all together

    73.5 + 2.45 = 75.95 cm
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