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2 years ago

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Which of the following units could be used for the average speed of an object? A. kilometers per hour (km/hr) B. miles per hour

(mi/hr, mph) C. meters per second (m/s) D. all of these

1 answer:

Shkiper50 [21]2 years ago

5 0

Answer : The correct option is, (D) all of these

Explanation:

Average speed : It is defined as the ratio total distance to total time. It is a scalar quantity that means it is defined by the magnitude only.

Formula used :

$\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}$

The common units of average speed are miles per hour (mph), kilometers per hour (kph), meters per second (m/s), or feet per second (ft/s).

The S.I unit of average speed is meter/second (m/s).

Hence, all of the units could be used for the average speed of an object.

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Answer:

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Explanation:

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No. of crest = 13

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therefore,

13 C + 15 T = $28(\frac{1}{2}\lambda)$

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3 years ago

A 6 N and a 10 N force act on an object. The moment arm of the 6 N force is 0.2 m. If the 10 N force produces five times the tor

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Answer:

The moment arm is 0.6 m

Explanation:

Given that,

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Using formula of torque

$\tau=Force\times lever\ arm$

So, Here,

$\tau_{2}=5 \tau_{1}$

We know that,

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Put the value of torque in the equation

$F_{2}\times d_{2}=5\times F_{1}\times r_{1}$

$r_{2}=\dfrac{5\times F_{1}\times r_{1}}{F_{2}}$

Where, $F_{1}$ =First force

$F_{1}$ =First force

$F_{2}$ =Second force

$r_{1}$ = distance

Put the value into the formula

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$r_{2}=0.6\ m$

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3 years ago

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Answer:

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