1)
Consider
V as the change in velocity.
V = SQRT[v2 + v2]
= SQRT[52 + 52]
= SQRT[50]
= 7.1 m/s
----------------------------------------------
2)
Consider that north is along y-axis and east is along
Initial displacement, d1 = 5 * cos(38)
+ 5 * sin(38)
Final displacement, d2 = 8 * sin(25)
- 8 * cos(25)
Total displacement, d = d1 + d2
= [5 * cos(38) + 8 * sin(25)]
+ [5 * sin(38) - 8 * cos(25)]
= 7.32
- 4.17
|d| = SQRT(7.32)2 + (-4.17)2]
= SQRT[71]
= 8.43 m
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