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What will be the velocity of object thro...

What will be the velocity of object thrown upwards with `40 ms^(-1)` after 2 s?

A

15

B

20

C

25

D

28

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(v = v _(0) + at), ( v = 40 + (-10) (2)), ( therefore v = 20ms ^(-1)):}// {:(v _(0) = 40 ms ^(-1)), ( a =- g =- 10 ms ^(-2)) , ( t = 2s ):}`
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