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AA Physics Addition of Vectors (Rectangular Components
nmdcat.online August 7, 2026

39. A vector of magnitude 20 N is directed at 45° to the positive x-axis. Its x and y components are

A. 10 N and 10 N
B. (10sqrt2) N and (10sqrt2) N
✓
C. 20 N and 20 N
D. (20sqrt2) N and (20sqrt2) N

📝 Explanation

At 45° both components are equal. Each is (20cos45^circ=10sqrt2) N.

📖 Additional Information

  • 10 N and 10 N
  • (10sqrt2) N and (10sqrt2) N
  • 20 N and 20 N
  • (20sqrt2) N and (20sqrt2) N

At 45° both components are equal. Each is (20cos45^circ=10sqrt2) N.

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