Question

Nomer 7 bantu ya!
please butuh cepet

Answer 1

72 km/jam = 72000 m/ 3600 s
                 = 20 m/s

Vt² = Vo² - 2 a S
0² = (20m/s)² - 2.a.100 m
400 = 200a
a = 2 m/s²

Answer 2

Vt² = Vo² + 2aS
0² = (20 m/s )² + 2.a.100 m
0 = 400 m²/s² + 200 m . a
a = 400 m²/s² / 200 m
a = 2 m/s²

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