Which has greater kinetic energy?
A. a car traveling at 30 km/hr
B. a car of half the mass traveling at 60 km/hr
C. both the same
D. need more information
Answer:B
Which has greater kinetic energy?
A. a car traveling at 30 km/hr B. a car of half the mass traveling at 60 km/hr C. both the same D. need more information