Easy -2.0 This is a straightforward application of a single SUVAT equation (v² = u² + 2as) with all values given directly. It's a 1-mark multiple-choice question requiring only substitution into a standard formula with no problem-solving or conceptual challenge, making it significantly easier than average A-level questions.
In this question use \(g = 9.8\,\mathrm{m}\,\mathrm{s}^{-2}\)
A ball, initially at rest, is dropped from a height of \(40\,\mathrm{m}\) above the ground.
Calculate the speed of the ball when it reaches the ground.
Circle your answer.
[1 mark]
\(-28\,\mathrm{m}\,\mathrm{s}^{-1}\) \quad \(28\,\mathrm{m}\,\mathrm{s}^{-1}\) \quad \(-780\,\mathrm{m}\,\mathrm{s}^{-1}\) \quad \(780\,\mathrm{m}\,\mathrm{s}^{-1}\)
In this question use $g = 9.8\,\mathrm{m}\,\mathrm{s}^{-2}$
A ball, initially at rest, is dropped from a height of $40\,\mathrm{m}$ above the ground.
Calculate the speed of the ball when it reaches the ground.
Circle your answer.
[1 mark]
$-28\,\mathrm{m}\,\mathrm{s}^{-1}$ \quad $28\,\mathrm{m}\,\mathrm{s}^{-1}$ \quad $-780\,\mathrm{m}\,\mathrm{s}^{-1}$ \quad $780\,\mathrm{m}\,\mathrm{s}^{-1}$
\hfill \mbox{\textit{AQA AS Paper 1 2018 Q11 [1]}}