Question

Present at least one example that illustrates acceleration. Is this a scalar or vector quantity? Explain why.

Answer 1

Because velocity is a vector and acceleration is from derivate of velocity, acceleration is also a vector.
Examples of acceleration: gravity, rocket thrust etc.

Answer 2

Examples are correct. But acceleration is a vector because it has direction etc.

Answer 3

Acceleration must be in a direction when the number of dimensions is finite.

Answer 4

It's a vector because acceleration has both a direction and a magnitude.

An example would be a car stopping at a rate of 10 m/s. In this example the direction of acceleration is opposite the direction of velocity (towards the trunk) and the magnitude is 10 m/s.