Greetings, i've been learning the mathematics of classical physics from a website called "A physiscs teacher" (http://aphysicsteacher.blogspot.com/search/label/acceleration). While looking through the equations on the acceleration i think i found a mistake made by the website.(adsbygoogle = window.adsbygoogle || []).push({});

A bus starts from rest and accelerates at a rate of 2.5 m/s2 for a time of 50 s. Determine the distance travelled by the bus during the acceleration phase.

Now let us identify the different variables involved.

u the initial speed = 0 m/s

t time taken = 50 s

a acceleration = 2.5 m/s2

s distance travelled = ???

If we want calculate s the distance travelled we will have to use the second equation of motion

S = ut + 1/2at2

Substituting the different values we get

S = ut + 1/2at(squared)

= o*50 + 0.5 *50(squared)

= 0 + 0.5*2500

=1250 m

My problem with this question comes in when after the values have been substituated.

= o*50 + 0.5 *50(squared), im kinda new to the mathematical side of physics but shouldn't the acceleration (2.5) have been substituated in as well to make it

= o*50 + 0.5 *2.5 *50(squared) get an answer of 3125?

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# Is this equation for acceleration on this website wrong?

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