1) A car making a 102- km journey travels 38 km/h for the first 51 km....

Question

Question

science physics

Answer 1

Answer #1

Solution,

Total time, t = total distance /average speed

t = 102/51 = 2 hrs

1st 51 km,

Time, t = 51/38 = 1.34 hrs

2nd 51 km,

(102/51) - 1.34 = 0.66 hrs

Speed, v = 51/0.66 = 77.27 km/h

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Answer 2

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