A car C travelled 80 m in a total time intervals of 8 s . how much is its average speed
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Answered by
0
Answer: 10m/s
10 m/s * (1 ft / .3048 m) * (1 mi / 5280 ft) * (3600 s / 1 hour) = 22.36936292 mi/h
so about 22.4 mph
Answered by
2
Answer:
Let the each half of the running time be t.
During first half time, speed of car is 80 km/h
Distance covered d
1
=80t km
During second half time, speed of car is 40 km/h
Distance covered d
2
=40t km
Total distance covered d=d
1 + d2
=80t+40t=120t
Total time taken T=2t
Average speed
= d/T
=
2t
120t
=60 km/hr
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