Do you know the mass of an object in the force applied to the object to make it move which of the news of motion will you calculate the acceleration of the object

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Asystematic approach to problem solving is called a (an)

What is the coefficient of kinetic friction μk between the block and the tabletop?