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AleksAgata [21]

2 years ago

11

A race car driver must average 200km/hr for four laps to qualify for a race. Because of engine trouble, the car averages only 17

0km/hr over the first two laps. What is the average speed must be maintained for the last two laps

1 answer:

vampirchik [111]2 years ago

5 0

The average speed would have to be 260 km/hr due to the driver originally going 30 km/hr too slow the first two laps

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Did the kinetic frictional coefficient (for the wood/aluminum and felt/aluminum cases) vary with area of contact

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Answer:

Explanation:

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While kinetic friction is the force that must be overcome so that a body can move with uniform speed over another.

Hence let consider one of the laws of friction which states that: '' Frictional force is independent of the area of the surfaces in contact.''

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Answer:

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given,

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for the swimmer

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from the above force calculation

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1 year ago

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Answer:

Work done, W = 84.57 Joules

Explanation:

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1 year ago

If the gas in a container absorbs 275 Joules of heat, has 125 Joules of work done on it, then does 50 Joules of work, what is th

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Answer:

The increase in the internal energy = 350 J

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Sign -

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2 years ago

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1 year ago

Read 2 more answers