An Object Is Thrown Straight Down with an Initial Speed

question 55

Multiple Choice

An object is thrown straight down with an initial speed of 4 m/s from a window which is 8 m above the ground.The time it takes the object to reach the ground is:

• A)0.80 s
• B)0.93 s
• C)1.3 s
• D)1.7 s
• E)2.0 s

---

Definitions:

Meristem

A region in plants where cell division occurs, leading to growth and development.

Plasmodesmata

In plants, cytoplasmic connections in the cell wall that connect two adjacent cells.

Protoderm

The outermost layer of cells in the early embryo of plants, which develops into the epidermis.

Ground Meristem

The part of a plant embryo that develops into the ground tissue of the plant, which includes the cortex and pith.