Question

A racing car has a uniform acceleration of `4 m//s^(2)`. What distance will it cover in `10 s` after start ?

Answer 1

Here, Initial velocity, `u` = 0
Time, `t` = 10s
Acceleration, `a` = `4m//s^(2)`
And, `" "` Distance, `s` = ? (To be calculated)
Now, putting these values in the second equation of motion :
`" "s=ut+(1)/(2) at^(2)`
We get : `" "s= 0xx10+(1)/(2) xx4 xx (10)^(2)`
`" "s=200 m`
Thus, the distance covered by the car in 10 seconds is 200 metres.