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r2=-3i+8j
Δr=r2-r1
Δr = (-3i+8j) - (5i+2j)
Δr= (-3-5)i - (8-2)j
Δr= (-8i + 6j) m/s ---> masih dalam bntuk vektor satuan
|r|= √rxi² + ryj²
|r| = √-8²+6² = √100 = 10 m
kecepatan rata"
v =
v =
v = (-4i+3j)m/s --> mash dalam bntk vktor satuan
|v| = √rxi² + ryj²
|v| = √-4² + 3²
|v| = √25 = 5m/s