Question

A body is projected vertically upward from the ground. taking vertical upward direction as positive and point of projections as origin , the sign of displacement of the body from the origin when it is at height h during upward and downward journey will be..??​

Answer 1

Answer:

b)Positive, negative

Explanation:

A body is projected vertically upward from the ground. Taking vertical upward direction as positive and point of projection as origin, the sign of displacement of the body from the origin when it is at height h during upward and downward journey will be *

(a) Positive, positive

(b) Positive, negative

(c) Negative, negative

(d) Negative, positive

Answer 2

Taking vertical upward direction as positive and point of projections as origin, the sign of displacement of the body from the origin when it is at height h during upward and downward journey will be Negative, positive.

Displacement can be understood as the difference between the final position and the initial position of the object.

When the body is projected vertically upward, then the displacement of the body during the upward and downward journey can be calculated as follows-

• During the upward journey, the final position of the body is height h while the initial position is at the ground.
• Thus, the direction of the displacement is downwards. Vertically upwards direction is positive (given), hence displacement is negative.
• During the downward journey, the final position is at the ground while the initial position is height h.
• Thus, the direction of the displacement is upwards. Vertically upwards direction is positive, hence displacement is positive.