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3 years ago

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A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it’s average speed?

1 answer:

PIT_PIT [208]3 years ago

4 0

Distance is 90km,time 1 hr
distance 2 is 82km,time 5 hrs
average speed=total distance travelled/total time taken.
90+82=172/5+1=6
average speed=28.7km over hour

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From the question we are told that

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The vertical spring length is $L = 1.10m$

The unstretched length is $L_{un} = 1.30m$

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The new length of the spring $L_{new} = 1.30 m$

The spring constant k is mathematically represented as

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Where F is the force applied $= m * g = 0.5 * 9.8=4.9N$

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$D_{max} = 0.950m$

So to obtain total length we would add the unstretched length

So we have

$L_{max} = 0.950 + 0.5 = 1.45m$

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