At what speed do a bicycle and its rider, with a combined mass of 120 kgkg , have the same momentum as a 1800 kgkg car traveling at 4.6 m/sm/s

69m/s

Explanation:

Step one:

given data

mass of a bicycle and its rider m1=120 kg

mass of car m2=  1800 kg

velocity of car= 4.6m/s

Required

The velocity of the  bicycle

Step two:

The momentum expression is m1v1= m2v2

make v1 subject of the formula, divide both sides by m1

v1= m2v2/m1

v1= 1800*4.6/120

v1= 8280/120

v1=69m/s

an electric circuit

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach