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3 years ago

Which is an example of sliding friction? (1 point)

Physics

2 answers:

irinina [24]3 years ago

5 0

Answer:

your answer is c

Explanation:

"a child applying the brakes on his bike"

Genrish500 [490]3 years ago

5 0

Answer:

Oa child applying the brakes on his bike

Explanation:

1. It is a rolling object, so no

2. is a gliding object

3. is object going from a state rolling acceleration suddenly halted and it will slide this is the correct

4. again, it is rolling

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4. What is the momentum of a 70 kg object traveling at 20 m/s?

Soloha48 [4]

Answer:

1400 units of momentum.

Explanation:

Using the formula p=mv. We can get the momentum using 70*20 =1400 units of momentum

6 0

3 years ago

A mass on a horizontal surface is connected to the spring and pulled to the right along the surface stretching the spring by 25

solniwko [45]

Answer:

320 N/m

Explanation:

From Hooke's law, we deduce that

F=kx where F is applied force, k is spring constant and x is extension or compression of spring

Making k the subject of formula then

$k=\frac {F}{x}$

Conversion

1m equals to 100cm

Xm equals 25 cm

25/100=0.25 m

Substituting 80 N for F and 0.25m for x then

$k=\frac {80}{0.25}=320N/m$

Therefore, the spring constant is equal to 320 N/m

3 0

4 years ago

If 270 watts of power is used in 42 seconds, how much work was done

navik [9.2K]

Answer: W = 11340J

Explanation:

Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.

So this is the Formula: Power = Work / Time.

Step 1: Find the Formula

P = W / T

Step 2: Make W the subject of the equation.

W = PT

Step 3: Given.

P = 270 Watts, T = 42 seconds

Step 4: Substitute these values into equation 2 .

W = 270(42)

Step 5: Simplify.

W = 11340J

The amount of work done was 11340.

~I hope I helped you! :)~

4 0

3 years ago

How does the eye control the amount of light entering it?

Trava [24]

Answer:

Dilating the pupils.

3 0

3 years ago

Read 2 more answers

Please help solving this physics question

sp2606 [1]

True
False
False.
True
True
False

4 0

3 years ago