Which statement best explains why the penny does not move in the same direction as the card?

(item #nf407555)
a. there is an absence of friction between the penny and the card.
b. there is a little gravity between the card and the penny.
c. the card exerts too much force on the penny.
d. the penny has more inertia than the card.

where are the vectors ?

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card