$1.$ When you turn $21$ years old, how many seconds old are you turning?

$2.$ A car is traveling at $85$ miles per hour $($mph$).$ Convert this to meters per second $($m$/$s$).[$Hint:

$1$ mile $=1\mathrm{.}609$ kilometers$]$

$3.$ Your friend is $5$ft $9$in tall. How tall is your friend in meters? $[$Hints: $1$ft $=12$in$,1$in $=2\mathrm{.}54$cm$]$

$4.$ Elite sprinters can reach speeds up to $10$m$/$s$.$ Suppose a sprinter maintains this pace for one

hour. What distance will they cover? Express your answer in physically intuitive units.

$5.$ A student explains that a train has a speed of $-95$ m$/$s$.$ Explain what is wrong with this

statement. What should they have stated for the speed?

Fall $2024$ Problem Set #$1$