3 years ago

A car whose acceleration is constant reaches a speed of

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

3 0

Answer:

12.5 s

Step-by-step explanation:

If acceleration is constant, speed is proportional to time. To increase the speed by 50 km/h, the car will need an additional time given by ...

t/(50 km/h) = (20 s)/(80 km/h)

t = (20 s)(50/80) . . . . . multiply by 50 km/h

t = 12.5 s

It will take 12.5 more seconds for it to reach a speed of 130 km/h.

Svetllana [295]3 years ago

3 0

Answer:

12.5s

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B%20%7B9x%7D%5E%7B4%7D%20%7D%20%20%5Ctimes%20%20%5Cfrac%7B%20%7B3x%7D%5E%7B

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