What is the difference between speed and velocity?
The difference is a bit subtle. Velocity is speed in a particular direction.
So, for example, a car travelling at 50 miles per hour round a bend is travelling at constant speed. Its direction is changing, however, so its velocity is also changing.
Velocity is always measured from a single point. So an object traveling in a circle has velocity zero relative to the centre of the circle, since the distance from the centre to the object is constant..
JK
Related Physics GCSE answers
All answers ▸Using the kinetic molecular theory,explain why air pressure inside a syringe increases if the volume decreases from 15.0 cm
What are the different kinds of nuclear radiation?
Circut is arranged in a loop, with resistor (5 ohm), power source(2V), resistor (3 ohm), and another power source (3V) connected subsequently. What is the voltage on 5ohm resistor?
The speed of light is 3.0 × 10^8 m/s. The wavelength of yellow light is 5.8 × 10^−7 m. Calculate the frequency of yellow light. State the unit.