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Whitepunk [10]
3 years ago
7

Describe the different between average speed and constant speed​

Physics
1 answer:
Paul [167]3 years ago
3 0

Answer:

average would be all your speeds divided by certain amounts of time and divided by the amounts of time you divided it into /////////  constant speed is is no going any faster or slower no acceleration.

Explanation:

constant speed means that there is no acceleration. For example a car moving at 50 mph is going at a constant speed, but a car that is standing still on the road and speeds up to 50 pmh is in a constant state of acceleration. Once the car reaches 50 mph there is zero acceleration and you are moving at a constant speed.     Constant speed

The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance. It's a scalar quantity which means it is defined only by magnitude. A related concept, average velocity, is a vector quantity.       Average speed

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A force of 3kN acts on a car to make it accelerate by 1.5m/s/s. What is the mass of the car?
Masja [62]

Answer:

2

Explanation:

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3 years ago
A body weights 50 N in air and 45 N when wholly immersed in water calculate (i) the loss in weight of the body in water (ii) the
Lelechka [254]

Answer:

difference  \: in \: weight = 150n - 100n = 50n

Now,buyantant force

difference \: in \: weight \: = volume(body) \times density \: of \: water \:  \times g

so;

50 =  {v}^{b}  \times 1 \times  {10}^{3}  \times 9.8m {s}^{2}

{v}^{b}  =  \frac{50}{1000 } \times 9.8

=  \frac{50}{9800}

= 0.0051

Now,

mass \: in \: air \:  = 150n =  \frac{150}{9.8kg}

density =  \frac{weght}{volume}

=  \frac{150}{0.0051}  \times 9.8 \\ x = 3000

And now,

specific \: density \:  =  \frac{density of \: the \: body}{density \: of \: water}

=  \frac{3000}{1000}

= 3

Hence that,specific density of a given body is 3

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