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So she can reach faster
you will need it when you push a trolley.
Friction can be very useful in your life. You need low friction when you ski. If you have high friction you cannot glide easily on the snow. You can also use low friction when you ice skate. If you have high friction you cant glide across the ice. When you use your laptop your keypad has to be able to glide. Some examples of high friction are erasing with your pencil, rubbing your hands together etc.
we need friction because if there were no friction the objects around us will slide
It depends what you want to do with it. Friction generates heat, which can be good (if you are cold), or bad (if you are not). Friction slows down movement, which can be good (if you are about to crash into a tree with your car), or bad (if you need high performance in an engine for instance).
You need high friction so your feet and hands don't slip.
On her feet and hands. That is why they build climbing shoes from sticky rubber. Her belay partner will need friction in their belay device (ATC OR GRI GRI, etc)
low friction
So she can reach faster
you will need it when you push a trolley.
You need high friction on your climbing shoes when making contact with the rock surface, especially on small holds or slippery surfaces. High friction helps you to maintain grip and stability while ascending the rock face.
Friction can be very useful in your life. You need low friction when you ski. If you have high friction you cannot glide easily on the snow. You can also use low friction when you ice skate. If you have high friction you cant glide across the ice. When you use your laptop your keypad has to be able to glide. Some examples of high friction are erasing with your pencil, rubbing your hands together etc.
we need friction because if there were no friction the objects around us will slide
It depends what you want to do with it. Friction generates heat, which can be good (if you are cold), or bad (if you are not). Friction slows down movement, which can be good (if you are about to crash into a tree with your car), or bad (if you need high performance in an engine for instance).
because you need to slide down the hill....?
yes! you need friction for lacrosse so you don't fall
F1 cars need friction for their brakes, if they didn't have friction on there brakes then it wouldn't be able to brake.