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## Vectors

Exercise 20.5

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.

Solution not yet available

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

Solution not yet available

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

1. $$\text{0}$$$$\text{°}$$

2. $$\text{90}$$$$\text{°}$$

3. $$\text{180}$$$$\text{°}$$

4. cannot tell

Solution not yet available

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

1. $$\text{4}$$ $$\text{N}$$

2. $$\text{7}$$ $$\text{N}$$

3. $$\text{11}$$ $$\text{N}$$

4. $$\text{15}$$ $$\text{N}$$

Solution not yet available