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3 years ago

• Usain Bolt can run at 10 m/s. If he runs for about 20 seconds, how far around the race track did he go?

Physics

1 answer:

yanalaym [24]3 years ago

4 0

Answer:

200metters

Explanation:

because in one second hes going 10 metter in 20 second he will go 20×10=200

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Convert the following to gram. a,250 kg b373 mg c,10 quanital,15 ton

rusak2 [61]

Explanation:

250 KG = 250000 Grams

373 MG = 0.373 Grams

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15 Ton = 15000000 Grams

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3 years ago

An object has rotational inertia I. The object,initially at rest, begins to rotate with a constant angularacceleration of magnit

Tresset [83]

Answer:

L = I α t

Explanation:

given,

rotational inertia = I

initial velocity = ω₀

magnitude of acceleration = α

angular momentum = L

time = t

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$\alpha = \dfrac{\omega - 0}{t}$

$\alpha = \dfrac{\omega}{t}$

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3 years ago

What is the coldest place on earth

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3 years ago

A4 kg bowling ball begins rolling down a at bowling alloy at 6 m/s . When it strikes the pins, it is estimated to be moving at 5

Paul [167]

Answer:

Energy lost due to friction is 22 J

Explanation:

Mass of the ball m = 4 kg

Initially velocity of ball v = 6 m/sec

So kinetic energy of the ball $KE=\frac{1}{2}mv^2$