What is the difference between velocity and speed?

Speed is a scalar quantity, meaning it gives us information for only the magnitude, how large a quantity is. Velocity is a vector quantiy, and this means it gives us both magnitude and direction. Both speed and velocity show how fast something is moving, however velocity also shows us the direction in which it is moving!

MC

Related Physics GCSE answers

All answers ▸

Compare the medical uses of ultrasound and X-rays. Your answer should include the risks, if any, and precautions, if any, associated with the use of ultrasound and X-rays. [6 marks]


A person swims from a depth of 0.5m to 1.7m below the surface of the sea. Denisty Sea Water = 1030 kg/m^3. g=Gravitational Field Strength = 9.8 N/kg. Calculate the change in pressure on the swimmer and give the unit.


What is the difference between a transverse and longitudinal wave?


What is meant by the conservation of energy?