Question

A boy on a bicycle drags a wagon full of newspaper at 0.800m/s for 30.0min using a force of 40.0 N. How much work has the boy done?​

Answer 1

Final Answer:-

$57600 J$

Question;-

★★A boy on a bicycle drags a wagon full of newspaper at 0.800m/s for 30.0min using a force of 40.0 N. How much work has the boy done?

Answer;-

following data:-

• ★W (work) = ? (in Joule ou kg.m²/s²)

• ★F (force) = 40 N (or 40 kg.m/s²)

• ★d (distance) = ? (in m)

• ★s (average speed) = 0.800 m/s

• ★t (time) = 30 min = 30*(60sec) = 1800 s

Apply the data to the average speed formula, we will have:

$S = \dfrac{d}{t}$

$d = S×t$

$d = 0.800\:\dfrac{m}{\diagup\!\!\!\!s} *1800\:\diagup\!\!\!\!s$

$\boxed{d = 1440\:m}\Longleftarrow(distance)$

Applying the Force formula parallel to the displacement, we have the following work:

$W = F × d$

$W = 40\:kg×\dfrac{m}{s^2} ×1440\:m$

$\boxed{\boxed{W = 57600\:kg*\dfrac{m^2}{s^2}}}\:\:or\:\:\boxed{\boxed{W = 57600\:Joule}}\:(SI\:unit\;is\;given\;in\;Joule)\:\:\:\:\:\:\:\bf\pink$

Answer 2

Answer:

It will be Work = 5700 Joules

Explanation:

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