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3 years ago

An object travels a distance of 56 meters to the right in 7 seconds. What is the object's velocity?

Physics

1 answer:

Yakvenalex [24]3 years ago

8 0

Explanation:

Distance travelled (d) = 56 metres

Time taken (t) = 7 seconds

velocity of the object (V)

= d / t

= 56 / 7

= 8 m/s

The velocity of the object is 8 m/s.

Hope it will help :)

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3 years ago

Represent 0.783 kg with Sl units having an appropriate prefix Express your answer to three significant figures and include the a

zysi [14]

Answer:

783 grams

Explanation:

Here mass is given in kg

Some of the prefixes of the SI units are

1 gram = 10⁻³ kilogram

1 milligram = 10⁻⁶ kilogram

1 microgram = 10⁻⁹ kilogram

1 nanogram = 10⁻¹² kilogram

The number is 0.783

Here, the only solution where the number of significant figures is three is gram. If any other prefix is chosen then the significant figures will increase

$1\ kilogram = 1000\ gram$

$\\\Rightarrow 0.783\ kilogram=0.783\times 1000\ gram\\ =783\ gram$

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