A. 0.637R B. 0.657R C. 0.677R D. 0.697R
A sphere, a cylinder and a hoop start from the rest and roll down the same incline. Which body reaches the bottom first?
A. sphere B. cylinder C. hoop D. all bodies at the same time
Fluid flow in which the speed varies layer-by-layer is called?
A. steady flow B. chaotic flow C. laminar flow D. turbulent flow
A line joining any planet to the Sun sweeps out equal __________ in equal time.
A. areas B. distance C. velocity D. angle