Q:Distance covered by a freely falling body in 2 seconds will be..
A) 4.9 m
C) 39.2 m
B) 19.6 m
D) 44.1 m
Answers
Answered by
0
x
1
=0+
2
1
(g)(1)
2
=5m
x
1
+x
2
=0+
2
1
(g)(2)
2
=20m⟹x
2
15m
x
1
+x
2
+x
3
=0+
2
1
(g)(3)
2
=45m⟹x
3
=25m
x
1
+x
2
+……x
n
=0+
2
1
(g)(n)
2
=5n
2
m⟹x
n
=5n
2
−[5(n−1)
2
]=10n−5=5+10(n−1)
⟹x
1
,x
2
,……x
n
forming an AP with d=10.
Answered by
5
Answer:
Explanation:
After two seconds it will have fallen 1/2 × 9.8 × 22 = 19.6 meters.
Attachments:
Similar questions