Practice Questions

A displacement vector in the x-y plane has a magnitude of 50 m and makes an angle of 240° with the positive x-axis. Its components are…

A. (Dx=-25 m, Dy=-43.3 m) ✓
B. (Dx=-43.3 m, Dy=-25 m)
C. (Dx=25 m, Dy=-43.3 m)
D. (Dx=43.3 m, Dy=-25 m)
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026

To make the resultant of forces F1 = (5i + 5j) N and F2 = (-10i + 5j) N equal to zero, a third force F3 must be…

A. (+5i - 10j) N ✓
B. (-5i + 10j) N
C. (+5i + 10j) N
D. (-5i - 10j) N
nmdcat.online AA Physics
Jun 25, 2026

The direction of the vector R in the previous question is in the…

A. First Quadrant
B. Second Quadrant
C. Third Quadrant
D. Fourth Quadrant ✓
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026

If the resultant of two forces is zero, the forces must be…

A. perpendicular
B. equal in magnitude and opposite in direction ✓
C. parallel and in the same direction
D. of unequal magnitude
nmdcat.online AA Physics
Jun 25, 2026

The resultant of three forces F1=10N East, F2=20N North, and F3=10N West is…

A. 20 N North ✓
B. 40 N
C. 20 N South
D. 0 N
nmdcat.online AA Physics
Jun 25, 2026
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