Question

2 the two quantities necessary for calculating speed are a acceleration b distance c velocity d time

Explanation:

To calculate speed, we use the formula $speed = \frac{distance}{time}$. So the two quantities needed are distance (how much ground is covered) and time (how long it takes to cover that distance). Acceleration is related to change in velocity over time, and velocity is speed with direction—neither is needed to calculate speed itself.

Answer:

B. distance, D. time