matticus
Guru
You should try it - much more fun in cars.Yes, do it whilst running too. Don’t feel the need when driving.
You should try it - much more fun in cars.Yes, do it whilst running too. Don’t feel the need when driving.
It happens when one is moving faster than another. Two ways it can happen.What is the meaning of this word "overtake"???
Given that a blink is ~0.1 s, then to go from 15 -> 30 mph gives an acceleration of
(30-15)*1600/360 ~ 67 m/s^2
or about 7g.
You and your bike have mass ~80 kg, so that requires a force of ~5,000 N (zero air and rolling resistance) and a rough average power output of 50,000 W. That's about two orders of magnitude better than most pro cyclists, maybe Pogacar league?
Impressed both at your power output as well as your ability not to blackout.
Force divided by time is not power. Back of the class for you.
IMO it would have been far better to just calculate initial and final Kinetic Energy (e.g. in Joules). Then power is roughly that change, divided by the time interval (one "blink"). as Power is just energy/time e.g. Joules-per-secondAverage speed of ~20 mph so ~10 m/s
power = force * average velocity
So multiplying by 10, not dividing by 0.1 :-).
Dodgy marking from teach
(obviously there are a fair few simplifications/approximations here, but the numbers should be about right)
IMO it would have been far better to just calculate initial and final Kinetic Energy (e.g. in Joules). Then power is roughly that change, divided by the time interval (one "blink"). as Power is just energy/time e.g. Joules-per-second
But I reckon you'd get to about the same answer, so no marking down from me :P
i go for the old stick in the spokes methodYes. Its the law.
Unlike most cyclists, I work to remain situationally aware so i know when one is behind me, even when they're a distance off. I know they'll be trying to haul me in so I let them knacker themselves a bit closing the distance, then I start to match them for a spell, then when I sense they are weakening I put the hammer down and clear off.
My other hobby is scalping ebike riders. Keep it above 15.5MPH and their disadvantage disappears and the bike becomes a liability. Indeed, anyone who reckons they roam the streets on a legal ebike looking for cyclists to scalp is either targeting geriatrics or talking out their arriss.