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3 years ago

A car accelerates from 30 m/s to 50 m/s in 2 seconds. Calculate the cars acceleration

Physics

1 answer:

masha68 [24]3 years ago

5 0

Answer:

applying 1st eq of motion vf=vi+at we have to find a=vf-vi/t here a=50-30/2=10 so we got a=10m/s²

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We use the formula, to calculate the volume of water displaced by concrete canoe,

$V =\frac{W}{\gamma }$

Here, W is the weight of concrete canoe and $\gamma$ is the specific weight of water and its value is $62.4\ lb/ft^3$ .

So,

$V =\frac{ 147\ lb}{62.4\ lb/ft^3}=2.356\ ft^3$ .

Now the volume of water occupied in ultra lightweight kevlar canoe,

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Here, w is weight of kevlar canoe.

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$v=\frac{38\ lb}{62.4\ lb/ft^3} =0.6089\ ft^3$

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