2 years ago

Astrology is a sub-discipline of astronomy. ОА. A True ОВ. False

Physics

1 answer:

mote1985 [20]2 years ago

5 0

Answer:

l think that the answer isFALSE.........

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Answer:

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Explanation:

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1 year ago

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A student is trying to calculate the density of a can. He already knows the mass, but he needs to determine the volume as well.

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2 years ago

A 1560-kilogram truck moving with a speed of 28.0 m/s runs into the rear end of a 1070-kilogram stationary car. If the collision

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Explanation:

given data

Truck mass M = 1560 Kg

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solution

first we get here final speed by using conservation of momentum that is express as

Mu = (M+m) V .......................1

put here value we get

1560 × 28 = (1560 + 1070 ) V

solve it we get

final speed V = 16.60 m/s

and

Change in kinetic energy will be here

Δ KE = $\frac{1}{2} Mu^2 - \frac{1}{2}(M+m)V^2$ .................2

put here value and we get

Δ KE = $\frac{1}{2}\times 1560\times 28^2 - \frac{1}{2}\times (1560 + 1070)\times 16.60^2$

solve it we get

Δ KE = 249158.6 kJ

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