If vector A = 2i + 3j and vector B = -i + 4j, what is the resultant vector R = A

Practice Questions

Q1
If vector A = 2i + 3j and vector B = -i + 4j, what is the resultant vector R = A + B?
  1. i + 7j
  2. i + j
  3. 3i + 7j
  4. 3i + 4j

Questions & Step-by-Step Solutions

If vector A = 2i + 3j and vector B = -i + 4j, what is the resultant vector R = A + B?
  • Step 1: Identify the components of vector A. Vector A = 2i + 3j means it has a component of 2 in the i direction and 3 in the j direction.
  • Step 2: Identify the components of vector B. Vector B = -i + 4j means it has a component of -1 in the i direction and 4 in the j direction.
  • Step 3: Add the i components of both vectors. For vector A, the i component is 2, and for vector B, the i component is -1. So, 2 + (-1) = 2 - 1 = 1.
  • Step 4: Add the j components of both vectors. For vector A, the j component is 3, and for vector B, the j component is 4. So, 3 + 4 = 7.
  • Step 5: Combine the results from Step 3 and Step 4 to form the resultant vector R. R = 1i + 7j.
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