MCQs

11262 questions found

Practice Questions

A velocity vector has components (-30 m/s, +40 m/s). Its magnitude is…

A. 70 m/s
B. 10 m/s
C. 50 m/s ✓
D. 1200 m/s
nmdcat.online AA Physics
Jun 25, 2026

The components of a vector are given by Vx = Vcosθ and Vy = Vsinθ. This is true only if θ is the angle the vector makes with the…

A. positive x-axis ✓
B. positive y-axis
C. negative x-axis
D. negative y-axis
nmdcat.online AA Physics
Jun 25, 2026

Three forces F1=(2i+3j), F2=(-4i+2j), F3=(2i-5j) act on a body. The body is in…

A. equilibrium ✓
B. uniform acceleration
C. non-uniform acceleration
D. rotational motion
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026

If the sum of two vectors is perpendicular to their difference, the two vectors must…

A. be perpendicular
B. have the same magnitude ✓
C. be parallel
D. have different magnitudes
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026
nmdcat.online AA Physics
Jun 25, 2026

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
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