Um móvel realiza movimento retilíneo uniformemente
acelerado. Sabe-se que no instante t = 0 seu espaço é 50
m. O módulo da velocidade do móvel tem valor 2 m/s.
Qual a função horária do espaço desse móvel?
A= S=5+10t
B=S = 50 + 2t
C=S = –50 – 2t
D=S = –10 + 5t
E=S = 20 – 2t

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.