You push on a crate with a force of 10 n to the right, and your friend pushes on the crate with a force of 25 n to the left. describe and explain the motion of the crate.

The crate will move in the left direction with a force of 15 N

Explanation:

Balanced force is defined as the force that gets cancelled out when equal forces are acting in the opposite direction. The net force on the system comes out to be 0.

Unbalanced force is defined as the force which does not get cancelled out because unequal forces act on the system in opposite direction. The motion of the object is in the direction of net force.

According to the question:

A crate is being pushed 10 N to the right.

Another force is being applied of amount 25 N to the left.

Net force acting on the object = 25 - 10 = 15 N (to the left)

Hence, the crate will move in the left direction with a force of 15 N

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.