How can a car be changing velocity yet not changing speed?
Speed is a scalar, which means the car's speed will be a value that has a magnitude (number) only. Velocity is a vector, which means that the car's velocity will be a value that has both magnitude and direction. In this case, the car is changing its direction of travel but the magnitude of the speed stays the same.
JL
Related Physics A Level answers
All answers ▸You have a layer of glass with a refractive index of 1.5 and the glass is surrounded by air. A light ray shines into the glass and Total Internal Reflection occurs at the glass-air boundary. What is the critical angle?
What are the similarities and differences between an elastic and an inelastic collision?
A car is travelling at 20 m/s. The accelerator is applied, causing an acceleration of 2m/s^s. How fast is the car travelling after 10 seconds of acceleration?
A car is travelling at 10m/s when it brakes and decelerates at 2ms^-2 to a stop. How long does the car take to stop?