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3 years ago

Does anyone want to do my science home work lol

Physics

2 answers:

storchak [24]3 years ago

8 0

Answer:

naw fam

Explanation:

plus why u have homework its the end of the week

USPshnik [31]3 years ago

6 0

I barely do my own homework lol

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How to calculate the speed using time and distance

-Dominant- [34]

Answer:

speed = distance/time

Explanation:

distance -> s

speed -> v

time -> t

3 0

3 years ago

7. A roller coaster’s velocity at the top of a hill is 10 m/s. Two seconds later it reaches the bottom ofthe hill with a velocit

zheka24 [161]

Answer:

7) $a=8m/s^2$

8) $a=-5m/s^2$

9) $a=-1.5m/s^2$

10) $v=29.4m/s$

Explanation:

For the problems 7, 8 and 9 we just apply the definition of acceleration, since no more information is given, which is:

$a=\frac{\Delta v}{\Delta t}=\frac{v_f-v_i}{t_f-t_i}$

So for each problem we will have:

7) $a=\frac{26m/s-10m/s}{2s}=8m/s^2$

8) $a=\frac{10m/s-25m/s}{3s}=-5m/s^2$

9) $a=\frac{0m/s-15m/s}{10s}=-1.5m/s^2$

For the problem 10, we use the equation of velocity in accelerated motion:

$v=v_0+at$

Since the ball starts from rest and the acceleration is that of gravity (we take the downward direction positive), we have:

$v=(0m/s)+(9.8m/s)(3s)=29.4m/s$

5 0

3 years ago

Find the product of 30−−√ and 610−−√. Express it in standard form (i.

Helen [10]

The product of √30 and √610 is 10√183.

√30 = √(2×3×5)
and √610 = √(2×5×61

Since 61 can't be factorised further.
Therefore, the value of √30×√610 is
= √(2×3×5×2×5×61)
= 2×5×√(3×61)
=10√183

4 0

3 years ago

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What is the SI unit of measurement for mass?

Sholpan [36]

Answer:

kilogram

Explanation:

8 0

3 years ago

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What factors that affect friction?

Dimas [21]

Firstly,friction depends partly on the nature of surface in contact with the moving body.The rougher the surface, the morer the friction experienced.Secondly, it is affected by the magnitude of force holding the two bodies that should be in contact,this is to say that an increase in the amount of weight on a body results to a rise in friction experienced by the body on the surface.

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3 years ago