Which statement about speed and/or velocity is true?

Velocity has both speed and direction.

Speed is constant.

Speed has direction and velocity.

Speed is measured over time.

What does the heliocentric model of the solar system state? A - All of the planets and the sun orbit earth B - Only the moon and Earth orbit the sun C - Earth and the other planets orbit the sun

If you see a spacecraft moving past you at 90% of the speed of light, and if you are able to watch a clock on the spacecraft, then according to special relativity you will see the clock

Where is the solid material left behind in the distillation process

A 500 pF capacitor is charged up so that it has 10μC of charge on its plates. The capacitor is then quicklyconnected to a 10 H inductor. Calculate themaximum energystored in the magnetic field of the inductoras the circuit oscillates.

Tech A says clutch slippage can best be diagnosed by loading the engine while the clutch is released with the transmission in a high gear, such as fourth. Tech B says a slipping clutch can cause friction surfaces warpage or hot spots.

Which organization functions to privide clinics and surgeries i developing nations

What role do convection currents play in oceans and the atmosphere?

What causes density currents to form in the mediterranean sea? a. condensation b. evaporation c. transpiration d. upwelling

How long does it take a car to travel 450 km at 75 km/hr

A free-falling golf ball strikes the ground and exerts a force on it