Question

In order to determine speed, you must know 

a.time.
c.Both (a) and (b)


b.distance.
d.None of the above  

Answer 1

To determine speed, one needs to know both the distance and time. Speed is distance divided by time, showing how fast something is moving. A clock, for instance, measures time, which is essential for calculating speed.

Step-by-step explanation:

In order to determine speed, you must know both the distance traveled and the time it took to travel that distance, which means the correct answer is c. Both (a) and (b). Speed is a scalar quantity representing how fast an object is moving, and it is calculated by dividing the distance by the time elapsed.

Time can be measured by various devices such as clocks or stopwatches, where the movement of the hands or the change in the digital display indicates a change in time. Speed is different from velocity, which is a vector quantity that includes both the magnitude and the direction of motion. For example, if an object moves in a circular path and returns to its starting point, its displacement is zero, but its distance traveled is the length of the path taken, resulting in a speed calculation.

Answer 2

The answer is c. Both a and b which is distance and time.
In order to get or determine the speed, we need to have both time and distance.
The formula would be :
speed = distance / time
And here are another important note to get the time and distance
time = distance / speed
Distance = speed x time

It is always important to remember these 3 formulas to be able to solve given situations about speed, time and distance.