Question

A box is sitting on a very slightly

slanted shelf. It has remained still,
despite the slant. Suddenly, the box
slides off the shelf. This sudden
movement must be due to...?
A. The mass of the box
B. The weight of the shelf
C. Unbalanced forces
D. A ghost

Answer 1

i would say it’s c bc the other two would’ve make it fall automatically and d obviously isn’t it