Question

Which of the following best describes acceleration?

a
the rate at which an object changes its direction
b
the rate at which an object changes its velocity
c
the speed of an object in a certain direction
d
the speed of an object in constant motion

Answer 1

[AI-generated answer — Bot GPT-4 Turbo]

b

the rate at which an object changes its velocity

Acceleration is defined as the rate at which an object changes its velocity. It can involve an increase or decrease in the magnitude of the velocity (speeding up or slowing down) as well as a change in direction, since velocity is a vector quantity, which means it has both magnitude and direction.