Question

Urgent help. Don't give useless answers​

Answer 1

Answer:

1. Speed is a scalar quantity and velocity is a vector. Speed only determines the magnitude that is how fast is a body moving whereas velocity determines the direction also that is in which direction the body is moving. Speed is the rate of change of distance whereas velocity is the rate of change of displacement.

2. The largest cellular organelle in a cell (plant or animal cell) is a nucleus

Answer 2

Answer:

i) Speed is a scalar quantity

Velocity is a vector quantity.

ii) Speed ascertains how fast a body moves.

Velocity ascertains the object's speed and the direction it takes while moving.

2) ♦ The largest cellular organelle in a cell (plant or animal cell) is a nucleus.

♦ In a plant cell, chloroplast (plastids) are the largest in size.

♦ The plastids are the cellular organelles which manufacture and stores different chemical compounds required by the autotrophic cells.

So, the correct answer is ' Plastids'.

Explanation:

Hope it helps