Question

A car starts from rest and uniformly accelerates to a speed of 30 mi/h in 6 s. The car moves north the entire time. Which option correctly lists a vector quantity from the scenario?

speed: 30 mi/h


acceleration: 5 mi/h/s north


distance: 30 mi


velocity: 5 mi/h/s north

Answer 1

acceleration: 5 mi/h/s north

Step-by-step explanation:

A quantity can be either vector quantity or scalar quantity, a vector quantity is a quantity with both magnitude and direction while a scalar quantity has magnitude only.

Examples of vector quantities include; velocity, acceleration, displacement , etc.

Acceleration is the rate of change of an object's velocity per unit of time. It is given by the formula; Velocity/time

Therefore in this case; a = 30 mi/h /6 s

= 5 mi/h/s

Therefore;

Acceleration = 5 mi/h/s