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AlladinOne [14]
3 years ago
13

if an object is moving and it changes its position by 2 m in every 4 s starting from the origin, then the position vs. time grap

h will be
Physics
1 answer:
jeka943 years ago
4 0

The position vs time graph will be a straight line that starts at the origin, and slopes up with a slope of 0.5 meter/second.

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A sack of potatoes weighing 16.0-kg falls from a very tall building. At a certain point at the motion downwards, its measured ac
Vitek1552 [10]

Answer:

The terminal speed is 74.833 m/s

Explanation:

The drag force is equal to square of speed:

Fdrag = k*v²

According Newton`s law:

Fnet = m*a

m*g - k*v² = m*a

k=\frac{m(g-a)}{v^{2} }

k=\frac{16*(9.8-4.6)}{54.2^{2} } =0.028

If terminal speed, the net force is zero.

kv_{t} ^{2} =mg\\v_{t} =\sqrt{\frac{mg}{k} } =\sqrt{\frac{16*9.8}{0.028} } =74.833m/s

7 0
4 years ago
Which number is not rounded correctly?
DedPeter [7]
The answer would be <span>B. 210.8 rounded to 210

When rounding, if the digit you are rounding is equal to or larger than 5, you round the number up. For example: 15 rounded up to 20. 99 rounded up to 100.

210.8 would be rounded up to 211 
because the 8 is greater than five, so you have to round it up.</span>
5 0
3 years ago
Read 2 more answers
Answer these questions "type of heat transfer that occurs between the sun and venus" "measure of the average value of the kineti
AveGali [126]
1) The type of heat transfer is radiation (ie the sun's rays)
2) Not entirely sure what you mean but it is possible with this equation: KE = 3/2kT with k being the Boltzmann's Constant and T the temperature in Kelvins
3) True? Not really a question.
4) This would be emissivity
5) Thermal Energy
6) Celsius
7) A thermometer


3 0
3 years ago
A train leaves the station heading west on the tracks . It takes the train 8 seconds to reach 80 miles per hour . It completes t
Virty [35]

Average speed=160/2=80mile/hour

4 0
3 years ago
Just a lil science to make you smile
ki77a [65]
Thank u!!!!!!!!!!!!!!!
6 0
3 years ago
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