A 1200 kg bus moving at 20 m/s takes a turn around a circle with a radius of 20 m. Determine the net force acting upon the bus.

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

Which statement correctly describes the relationship between frequency and wavelength?