What is the mass of the block if it has a density of 0.86kg/L

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

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.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.