AP Physics C 2017

(A) ½F (^1)
(B) F (^1)
(C) F 1 cos θ
(D) F 1 sin θ
(E) F 1 tan θ
4 . The box pictured above moves at constant speed to the left. Which of the following is correct?
(A) The situation is impossible. Because more forces act right, the block must move to the right.
(B) T 3 > T 1 + T (^2)
(C) T 3 < T 1 + T (^2)
(D) T 3 = T 1 + T (^2)
(E) A relationship among the three tensions cannot be determined from the information given.
The following diagram relates to Questions 5 and 6.
A block of mass m is sliding up a frictionless incline, as shown above. The block’s initial velocity is 3
m/s up the plane.
5 . What is the component of the weight parallel to the plane?
(A) mg
(B) mg cos 40°
(C) mg sin 40°
(D) g sin 40°
(E) g cos 40°
6 . What is the acceleration of the mass?
(A) 3 m/s^2 , up the plane
(B) mg sin 40°, up the plane
(C) mg sin 40°, down the plane
(D) g sin 40°, up the plane
(E) g sin 40°, down the plane