Answer:
Explanation:
Sa=Sa0 +Vot+at²/2
Sa = 0 - 2t+2t²/2
Sa = -2t+t²
Sb = Sb0+Vot+at²/2
Sb = 53 + 0 + 4t²/2
Sb = 53 + 2t²
-2t+t² = 53 + 2t²
t² + 2t - 53 = 0
t = -2 ± [tex]\sqrt{216}[/tex] / 2
t = 3[tex]\sqrt{6}[/tex] -1 s
Sb = 53 + 2( 3[tex]\sqrt{6}[/tex] -1) m
