Question

Q3. The angle between two negative vectors in degrees is
b. 180
C. 60
d. 45​

Answer 1

Answer :

The angle between two negative vectors in degree is 180°

Explanation :

➳ A negative vector of a given vector is a vector of same magnitude but acting in a direction opposite to that of the given vector. The negative vector of $\vec{A}$ is represented by $-\vec{A}$.

✴ Learn More :

• Null vector is a vector which has zero magnitude and an arbitary direcrion. It is represented by $\vec{0}$ and is also known as zero vector. Velocity of stationary object, acceleration of an object moving with uniform velocity and resultant of two equal and opposite vectors are the examples of null vector.
• A vector whose initial point is fixed is called a localised vector and whose initial point is not fixed is called non-localised vector.
• The latin word vector means carrier.

Answer 2

Answer:

180 degrees

Explanation:

Work done can be positive,negative and zero. When a body is being lifted in the upward direction, the force of gravity is acting in the downward direction. But, the displacement of the body is in the upward direction. Since the angle between the force and displacement is 180 degrees, the work done by the gravitational force on the body is negative. Diagrammatic representation is given.Hence for negative work done, angle between force and displacement is 180 degrees