Survey on Bicycle riding practices?

Hunta

I have to take a survey for my drivers ed class please help ty

Drivers
List five ways to prevent traffic conflicts with bicyclists.

Bicyclists list five safe bicycle riding practices.

Answer
Watch for bicycle riders turning in front of you without looking or signaling.

Allow plenty of room when passing a bicycle rider.

Watch out for bikes coming out from driveways or from behind parked cars or other obstructions.

Honk your horn briefly as a signal that you're going to pass if you are about to pass a bicycle on a narrow roadway.

Avoid passing between a bicyclist and oncoming vehicles on a two-lane road. Slow down and allow vehicles to pass. Then move to the left to allow plenty of room to pass the rider safely.


Maintain control of your bicycle.

Protect yourselfâReduce the risk of head injury by always wearing a helmet.

Be visible, alert, and communicate your intentions.

Ride with traffic.

Ride far enough away from parked vehicles to avoid being hit by an opening door...........

Physics of bicycle helmet?

Q. I really need help. I have a science assignment due this week about bicycle helmets and why they're used to help prevent injury. I have to design my own helmet and it has to explain about the distribution of force and why it helps. Please help if you know what I'm talking about, thanks.

:)

Answer
I do not design them but....
The principle is that the helmet material will deform and absorb the impact force and distribute it over the whole of the surface in contact with the head. By that means the pressure or impulse on the head/brain is reduced.
I think the main material inside the helmet (outside - just a shiny shell) is polystyrene which also is low density.

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