A lorry is travelling around a roundabout at constant speed. Why is its velocity changing?
Because velocity is a vector and therefore has both magnitude and direction. Thus as the lorry is changing direction whilst travelling around the roundabout its velocity is also changing (velocity = displacement / time).
AL
Related Physics GCSE answers
All answers ▸A jug containing 0.250 kg of liquid is put into a refrigerator. Its temperature decreased from 20°C to 15°C. The amount of energy transferred from the liquid was 5,250 J. Calculate the specific heat capacity of the liquid.
What is the resistance (in Ohms) of two 20 Ohm resisters in parallel?
What is a force?
Suppose a student wants calculate the density of the two different objects, a metal cube and a small statue. Describe the methods the student could use to measure the density of the two objects.