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A missile is fired for maximum range wit...

A missile is fired for maximum range with an initial velocity of `20m//s`. If `g=10m//s^(2)`, the range of the missile is

A

50 m

B

60 m

C

20 m

D

40 m

Text Solution

Verified by Experts

The correct Answer is:
D
For maximum range ofprojectiles `theta` will be `45^(@)` by the law of projectile motion
`:.R_("max")=(u^(2))/(g)`
Give `u=20 ms^(-1) and g=10 ms^(-2)`
`R_("max")=((20)^(2))/(10)=(400)/(10)`
`R_("max")40 m`
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