During the move from a to b, the velocity decreases by half. determine vectors for the average acceleration, average fnet, and average velocity during the trip?

Explanation:

Dynamics

The dynamics of an object on which a net force is applied are explained by Newton's laws. The net force equals the product of the mass of the object by its acceleration

The formulas for the accelerated motion gives us other relevant magnitudes like the velocity

Since all the magnitudes are vectors, given an initial state and a final state, their average values only depend on the difference of their states.

We know during the move from A to B, and object decreases its veclocity by half. It means

It that happened in a time t, then the average acceleration was

If the object has a mass m, the net force is

Finally, the average velocity was

v=ir = 3x15 =45 v

d. platinum would have the greatest temperature increase because it has the lowest specific heat.