2 years ago

A car increases velocity from 30 m/s to 60 m/s in 4 seconds. Calculate the average acceleration of the car over this time.

Physics

1 answer:

Lilit [14]2 years ago

3 0

Answer:

B.7.5m/s2

Explanation:

average acceleration=change invelocity/time taken

a=(60-30)/4

=7.5m/s2

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Read 2 more answers

You want to see how your new belt buckle matches your new hat. Your eyes are 114 mm below the top of the hat and 800 mm above th

damaskus [11]

Answer:

$x=0.057m$

$h=0.457m$

Explanation:

From the question we are told that

Distance of eyes from the top of hat $d_1=114mm$

Distance of eyes from buckle $d_2=800mm$

Generally position of mirror relative eyes x is mathematically given as

$x=\frac{114}{2}$

$x=57mm$

$x=0.057m$

Generally the height of the mirror h is mathematically given as

$h=\frac{(Buckle\ below\ the\ hat)+(Buckle\ below\ the\ hat)}{2}$

$h=\frac{(114)+(800)}{2}$

$h=457mm$

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