When a board with a box on it is slowly tilted to a larger and larger angle, common experience shows that the box will at some point "break loose" and start to accelerate down the board. the box begins to slide once the component of its weight parallel to the board, w||, equals the maximum force of static friction. which of the following is the most general explanation for why the box accelerates down the board after it begins to slide (rather than sliding with constant speed)?

friction and inertia is acting upon the box

The coefficient of kinetic friction is less than the coefficient of static friction.

Explanation:

At the point when the box finally does "break loose," the component of the box's weight that is parallel to the board,  w|| , is equal to  μsn  (the maximum force of static friction). For the box to then accelerate, there must be a nonzero net force acting on the box parallel to the board. In other words,  w||  must be greater than the force of kinetic friction,  fk=μkn . Therefore the force of kinetic friction,  μkn  , must be less than the force of static friction,  μsn , which implies  μk<μs , as expected.

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation: