The answer would be:
<u><em>B. Acceleration is a vector quantity.</em></u>
We can rule out the others because:
---Acceleration CAN be described with a negative number. The sign actually shows the direction. A negative number indicates a deceleration.
---Displacement change over time is the definition of velocity NOT acceleration.
---The SI unit for acceleration is m/s².
***A <em>vector quantity</em> is measure of <u>magnitude</u> and <u>direction</u>, which acceleration has.
Answer:
direction of gravitational pull of the Sun on the planet
Explanation:
A planet orbiting or revolving around the sun due to gravitational force of the Sun on the planet which attracts the planet and compel the planets to move in a circular path. If this force of gravity is not applied on the planets, the planets will move in a straight line instead of circular direction so gravitational pull of the Sun on the planet is very necessary for moving planets in a circular path.
Answer:
They are like each other
Explanation:
Your skin covers your body, protecting it from abrasion, water loss, and infection and secreting conditioning substances. The epidermis of a plant serves similar functions. Usually a single layer of closely-packed cells, epidermal tissue covers leaves and young stems and roots of vascular plants. Most epidermal cells secrete waxy substances which form a cuticle, or waterproof covering, over the aerial surfaces of the plant, such as the stems and leaves. The cuticle also resists viral, bacterial, and fungal invasion.
