# physics

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A car traveling 90 km/hr is 100 m behind a truck traveling 50 km/hr. How long will it take
the car to reach the car?

• physics -

d1 = 0.1 + d2 = 90 t
d2 = 50 t

0.1 + 50 t = 90 t
40 t = 0.1
t = 1/400 = .0025 hr = 9 seconds

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