Question

When a race begins, a racecar accelerates from zero to 200 km/h in 4.80 seconds. What is its average acceleration?

Answer 1

Shouldn't This Be A Math Question?

Answer 2

roughly 12 m/s²

Answer 3

by definition, the average acceleration A is:
\[\Large A = \frac{{\Delta v}}{{\Delta t}} = \frac{{200 \cdot 3.6}}{{4.8}} = ...\frac{{meters}}{{{{\sec }^2}}}\]
please 200 Km/hour correspond to 200*3.6 m/seconds

Answer 4

200 km/h corresponds to \[\large \frac{200}{3.6}\ m/s\]

Answer 5

oops.. you are right! @kropot72 thanks! for your comment :)
I'm very sorry for my error @Joshdaddy
here is the right computation:
\[\Large\frac{{\Delta v}}{{\Delta t}} = \frac{{200/3.6}}{{4.8}} = ...\frac{{meters}}{{{{\sec }^2}}}\]

Answer 6

@Michele_Laino You're welcome :)

Answer 7

thanks! :)