The cyclist increased his speed from 10 km / h to 20 km / h in 40 seconds. Determine acceleration and effective force.
| December 2, 2020 | education
The cyclist increased his speed from 10 km / h to 20 km / h in 40 seconds. Determine acceleration and effective force. The weight of the cyclist with the bike is 80 kg.
v0 = 10 km / h = 10 / 3.6 m / s
v1 = 20 km / h = 20 / 3.6 m / s
a = v1-v0 / t = 10/40 * 3.6 = 0.07m / s2 – acceleration
F = ma = 80ru * 0.07m / s2 = 5.6H
answer: 5.6H.
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