$(1)$ A $1200kg$ racecar goes at a constant speed of $120k\frac{m}{h}$ round a curved section of track that has a radius

of $60m.$

$($i$).$ What is the speed of the car in $\frac{m}{s}?$

$($ii$).$ What is the car's centripetal acceleration in $\frac{m}{s^2}$ and in $g\text{'}$s$?$

$($iii$).$ What is the centripetal force acting on the car?

$(2).$ In the figure below, the net external force on the $22kg$ mower is stated to be $58N.$

If the force of friction opposing the motion is $12N,$

$($a$).$ what force $F($in $N)$ is the person exerting on the mower? $($Enter the magnitude.$)$

$($b$).$ Suppose the mower is moving at $1\mathrm{.}5\frac{m}{s}$ when the force $F$ is removed. How far $($in $m)$ will the mower go

before stopping?

Ans: $m$