A body of constant mass is studied in different states of motion by a student in the…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power
Problem
A body of constant mass is studied in different states of motion by a student in the laboratory.
(a) State the mathematical relation connecting the kinetic energy KE of the body with the square of its speed v2 when the mass is kept fixed.
(b) The speed of the body is doubled. By what factor does its kinetic energy change? Explain your reasoning clearly.
(c) Draw rough qualitative sketches (no scale necessary) of the following on the same sheet:
(i) KE plotted against speed v.
(ii) KE plotted against v2.
For each sketch, mention whether the graph is a straight line or a curve and justify your answer in one or two sentences.