Vertical Motion 2

Please vertify whether my understanding is correct or not. Tks

A child throws a table tennis ball upwards at the height of a table tennis table.

1. The ball reaches the highest point at P. (T)
2. The shaed area is the max height reached by the ball. (F)
3. The slope of the graph at P is zero (F)
4. The slope at Q gives the projecting speed (T)
5. The ball drops below the table after Q (T)
6. The time taken for the ball to reach Q if twice the time taken to reach P. (T)
7. The best v-t graph of the ball is (C)


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