A body covers 200 cm in the first 2 sec. and 220 cm in next 4 sec. What is the velocity of the body at the end of 7th second?

A body covers 200 cm in the first 2 sec. and 220 cm in next 4 sec. Wha

1.	A body covers 200 cm in the first 2 sec. and 220 cm in next 4 sec. What is the velocity of the body at the end of 7th second?
A.	40 cm/sec
B.	20 cm/sec
C.	10 cm/sec
D.	5 cm/sec
Answer» D. 5 cm/sec

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A body covers 200 cm in the first 2 sec. and 220 cm in next 4 sec. What is the velocity of the body at the end of 7th second?

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