Easy -1.8 This is a straightforward one-mark impulse calculation requiring only the formula I = m(v - u) with sign convention for direction. It's a direct application of a single formula with no problem-solving, making it significantly easier than average A-level questions.
1 A ball of mass 0.2 kg is travelling horizontally at \(7 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) when it hits a vertical wall.
It rebounds horizontally at \(5 \mathrm {~m} \mathrm {~s} ^ { - 1 }\)
Find the magnitude of the impulse exerted on the ball by the wall.
Circle your answer. [0pt]
[1 mark]
0.4 N s
1.4 N s
1 A ball of mass 0.2 kg is travelling horizontally at $7 \mathrm {~m} \mathrm {~s} ^ { - 1 }$ when it hits a vertical wall.\\
It rebounds horizontally at $5 \mathrm {~m} \mathrm {~s} ^ { - 1 }$\\
Find the magnitude of the impulse exerted on the ball by the wall.\\
Circle your answer.\\[0pt]
[1 mark]\\
0.4 N s\\
1.4 N s
\hfill \mbox{\textit{AQA Further Paper 3 Mechanics Q1 [1]}}