Question

1. Which of these is necessary for a reasonable order-of-magnitude estimate of the speed of a falling object?

a. Round all numbers to the nearest whole number.
b. Have a correct and exact value for the distance of the fall.
c. Use numbers for the time and distance of the fall that are reasonable even if inexact.
d. Assume that any falling object takes about a second to reach the ground

Answer 1

C. Use numbers for the time and distance of the fall that are reasonable even if inexact.

Answer 2

The appropriate answer is c. use numbers for the time and distance of the fall that are reasonable even if inexact. Speed can be defined as the rate at which an object moves. To calculate speed, to values must be known; the distance through which an object moves and the time the object takes to move through that distance.