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VMariaS [17]
3 years ago
14

Name two ways that friction is harmful and two ways that friction is helpful to you when riding a bicycle

Physics
1 answer:
lawyer [7]3 years ago
6 0
<u>Harmful</u><u />

-causes heat; if it's not used correctly, it can cause injury
-when falling, the friction between your knee/leg and the ground can cause scrapes
<u>
</u>
<u>Helpful</u><u />

-helps stop the bike, the brakes rub against the tire which slows it down to a stop
-it can also help move the bike; the chains rub against tires which accelerate the bike
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Answer:

C is the answer

Explanation:

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3 years ago
A 5kg object accelerates from 3m/s to 7m/s in 5 seconds. Calculate the force required
Ad libitum [116K]

Answer:

4N

Explanation:

a = (7-3)/5 = 0.8m/s^2

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3 years ago
Why is the coefficient of friction independent of the mass?
Svet_ta [14]
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4 years ago
Two plastic bowling balls, 1 and 2, are rubbed with cloth until they each carry a uniformly distributed charge of magnitude 0.50
galben [10]

Answer:

The right solution is "4.5\times 10^{-10} \ Cm".

Explanation:

Given that,

q = 0.50 nC

d = 900 mm

As we know,

⇒ P=qd

By putting the values, we get

⇒     =0.50\times 900

⇒     =(0.50\times 10^{-9})\times 0.9

⇒     =4.5\times 10^{-10} \ Cm  

5 0
3 years ago
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ZanzabumX [31]

Answer:

343 \div 1000 = 0.343

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