Question Info

This question is public and is used in 14 tests or worksheets.

Type: Multiple-Choice
Category: Algebraic Expressions
Level: Grade 10
Standards: HSA-SSE.A.1, HSA-SSE.A.1b
Author: nsharp1
Created: 5 years ago

View all questions by nsharp1.

Algebraic Expressions Question

View this question.

Add this question to a group or test by clicking the appropriate button below.

Grade 10 Algebraic Expressions CCSS: HSA-SSE.A.1, HSA-SSE.A.1b

For the expression mv1-v2/c2, which is the best explanation for why, when v is much smaller than c (v << c), the expression is very close to mv?
  1. If v << c, v becomes almost zero and it cancels out, and only c is left.
  2. Looking at the factor 1-v2c2, if v << c, then v2c2 is close to zero, and so this factor is very close to being equal to one.
  3. Since v is in the denominator, if it is much smaller than c the entire denominator becomes close to zero, then this part of the expression is undefined and can be ignored.
  4. Because, if v << c, all parts of the expression with v can be ignored.