If the only forces acting on a 2.0-kg mass are , and , what is the magnitude of the acceleration of the particle? A)1.5 m/s² B)6.5 m/s² C)4.7 m/s² D)9.4 m/s² E)7.2 m/s²

Question

Quizplus · Accepted Answer

Applying Newton's second law, 
sum of forces = mass x acceleration
F_net = m x a
F_net = (11eb8c7e_f54f_fcfe_8371_7f2fa612b51a_TB8847_11 ) + (11eb8c7e_f54f_fcff_8371_7b5e33335c0f_TB8847_11 )
F_net = -3.3 + 8
F_net = 4.7 N 
a = F_net/m
a = 4.7/2
a = 2.35 m/s^2
The answer closest to 2.35 m/s^2 is C) 4.7 m/s^2.

If the Only Forces Acting on a 2