Pretty sure it's the 4th one
The answer to your question is A.
Speed is the distance travelled in a time period but acceleration is the change in the speed of body in a given period.
The S.I. units are
Speed=ms^-1
Acceleration=ms^-2
Answer:
1. This timeline covers about 6,000 years
2. About 3,000 years
3. The Neolithic Revolution
4. The plow was invented around 4,000 B.C.
5. Put an X on "Cattle were domesticated between 10,000 and 7,000 B.C., and "Before 9,000 B.C., people did not grow their own food
Explanation:
