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Question 1 · 5 marks
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A 2 kg sphere hits a smooth vertical wall with velocity
(
4
i
+
3
j
)
(4\mathbf i+3\mathbf j)
(
4
i
+
3
j
)
m
s
−
1
^{-1}
−
1
.
The positive
x
x
x
-axis points towards the wall. The coefficient of restitution is 0.5.
(a)
Find the velocity immediately after impact.
3 marks
(
,
)
xⁿ
a/b
√
π
(
)