What average speed, most nearly, is required to run a mile (1.6 km) in 4 minutes?

4.0 m / s

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7.0 m / s

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40.0 m / s

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400.0 m / s

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Solution

The correct option is B $7.0 m / s$
Given that,

Time $t = 4 min = 240 s$

Distance $D = 1.6 k m = 1.6 \times 10^{3} m$

Now, the average speed

$v = \frac{D}{t}$

$v = \frac{1.6 \times 10^{3}}{240}$

$v = 6.6 m / s$

Hence, the average speed in near to option B i.e. $7.0 m / s$

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What average speed, most nearly, is required to run a mile (1.6 km) in 4 minutes?

The correct option is B 7.0 m/sGiven that, Time t=4min=240s Distance D=1.6km=1.6×103m Now, the average speed v=Dt v=1.6×103240 v=6.6m/s Hence, the average speed in near to option B i.e. 7.0 m/s

The correct option is B $7.0 m / s$
Given that,

Time $t = 4 min = 240 s$

Distance $D = 1.6 k m = 1.6 \times 10^{3} m$

Now, the average speed

$v = \frac{D}{t}$

$v = \frac{1.6 \times 10^{3}}{240}$

$v = 6.6 m / s$

Hence, the average speed in near to option B i.e. $7.0 m / s$