The first step in solving any problem is listing down the known and the unknown variables. Let us rewrite the 1st EOM: \(v = u + a*t\). Recall that \(v\) is the

**final velocity**, \(u\) is the**initial velocity**, \(a\) is the**acceleration**and \(t\) is the**time period**.In the previous module, we saw that Jerry's velocity changed from \(2.5 \, \mathrm{m/s}\) at \(2 \, \mathrm{s}\) to \(5 \, \mathrm{m/s}\) at \(4 \, \mathrm{s}\). Which of the following represents the information given in the previous sentence?

\(v = 2.5 \, \mathrm{m/s}, \, u = 5 \, \mathrm{m/s}, \, a = 2 \, \mathrm{m/s^2}\)

\(v = 5 \, \mathrm{m/s}, \, u = 2.5 \, \mathrm{m/s}, \, a = 2 \, \mathrm{m/s^2}\)

\(v = 2.5 \, \mathrm{m/s}, \, u = 5 \, \mathrm{m/s}, \, t = 2 \, \mathrm{s}\)

\(v = 5 \, \mathrm{m/s}, \, u = 2.5 \, \mathrm{m/s}, \, t = 2 \, \mathrm{s}\)