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End of chapter exercises

A point is acted on by two forces in equilibrium. The forces

  1. have equal magnitudes and directions.

  2. have equal magnitudes but opposite directions.

  3. act perpendicular to each other.

  4. act in the same direction.

d.

have equal magnitudes but opposite directions.

Which of the following contains two vectors and a scalar?

  1. distance, acceleration, speed

  2. displacement, velocity, acceleration

  3. distance, mass, speed

  4. displacement, speed, velocity

d.

displacement, speed, velocity

Two vectors act on the same point. What should the angle between them be so that a maximum resultant is obtained?

  1. 90°

  2. 180°

  3. cannot tell

Two forces, 4 N and 11 N, act on a point. Which one of the following cannot be the magnitude of a resultant?

  1. 4 N

  2. 7 N

  3. 11 N

  4. 15 N