A block of material of mass m and specific heat c falls from height h and reaches speed v just before striking the ground. Its temperature is measured immediately after it strikes the ground. If we ignore any change in temperature owing to interaction with the air, the change in temperature of the block of material is:

Question

Quizplus · Accepted Answer

The change in temperature of the block of material can be found using the formula:

ΔT = mv^2 / (mc)

where m is the mass of the block, v is the speed of the block just before it strikes the ground, c is the specific heat of the block, and ΔT is the change in temperature.

The height from which the block falls and the fact that it strikes the ground are irrelevant to the change in temperature, since we are assuming no interaction with the air.

Therefore, the answer is either (a) or (b) depending on the values of m, v, and c which are not given in the question. Both (a) and (b) represent possible answers to the problem.

A Block of Material of Mass M and Specific Heat ΔT=ghc\Delta T=\frac{g h}{c}ΔT=cgh​

A Block of Material of Mass M and Specific Heat $\Delta T=\frac{g h}{c}$