Question

. If A = {a,b,c,d,e} B = {c,d,e,f} C = {b,d} D = {a,e}

100points

A. D ⊆ A

B. C ⊆ B

C. A ⊆ D

D. D ⊆ B

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Answer 1

ANSWER:-

OPTION ( A )

Freely falling body implies that there must be no other force except gravitational force.

In dealing with problems like this, we assume that there is no air resistance or we ignore air resistance.

When an object is thrown up, the only force acting on it is the gravitational force.

No other force except gravitational force acts on it.

Once it is freed from the force which made it to go up, it is a freely falling body.

Its velocity decreases as it goes up implies it is falling Down.

And hence when falling down velocity increases

Answer 2

Answer:

A

Step-by-step explanation:

B,C and D are all the subsets of A