A cyclist travelling along a straight level road accelerates at 1.2 m/s2 for 5 seconds. The mass of the cyclist and the bicycle is 80 kg
(a)
calculate the resultant force needed to produce this acceleration
Show clearly how you work out your answer and give the unit.
Resultant force =

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see earlier

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27