Speed is a derived term that is the result when distance or displacement is divided by unit time. Speed is a scalar unit which means it only includes magnitude not direction, thus always positive. The answer thus are the three choices given above.
Explanation:
Wooho Physics my favorite subject! And my 100th answer :)
We will use the formula

- Where v is Final velocity
- And u is Initial velocity.
- t is time taken.
In this question :-
- u is 4 m/s
- v is 6 m/s
- t is 5 seconds
Applying the formula:-


So, Acceleration is 0.4 m/s² is the answer.
Hope it helps :)
Answer:
okay
Explanation:
(wish i could help but im just answering for points)
There would be a symbol on names of the elements that would say which state it would usually be in.
there are more metals in the periodic table of elements (currently) if that's what the second question is asking about