Bobsleigh 83132

Behind the pond, the cat Mikeš skis and bobsleds a 300-meter-long slope that a careful bobsleigh can go down in a minute. If Mike is down 20 seconds earlier, how many km/h is He going down the hill faster than Bobes?

Correct answer:

v =  9 km/h

Step-by-step explanation:

s=300 m t1=1 min s=1 60  s=60 s  Δ=20 s t2=t1Δ=6020=40 s  v1=s/t1=300/60=5 m/s v2=s/t2=300/40=215=7.5 m/s  v3=v2v1=7.55=25=2.5 m/s  v=v3 km/h=v3 3.6  km/h=2.5 3.6  km/h=9 km/h=9 km/h



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