Q.

Angle between velocity and acceleration vectors in the following cases

 List - I List - II
A.Vertically projected bodye.90o
B.For freely falling bodyf.Changes from point to point
C.For projectileg.Zero
D.In uniform circular motionh.180o
 ABCD
1.hgfe
2.fghe
3.efhg
4.ghef

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a

2

b

1

c

3

d

4

answer is A.

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Detailed Solution

Angle between velocity and acceleration vectors:

a) For Vertically projected body: 180o (During upward motion) .

b) For freely falling body : 0o

c) For projectile : changes point to point on trajectory

d) In uniform circular motion: always 90o 

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Angle between velocity and acceleration vectors in the following cases List - I List - IIA.Vertically projected bodye.90oB.For freely falling bodyf.Changes from point to pointC.For projectileg.ZeroD.In uniform circular motionh.180o ABCD1.hgfe2.fghe3.efhg4.ghef