Question

A projectile fired with initial velocity u at some angle `theta` has a range R . If the initial velocity be doubled at the same angle of projection, then the range will be
A. half
B. one-fourth
C. two times
D. four times

Answer 1

Correct Answer - D
Range of projectile `=(u^(2)sin 2theta)/(g)`
`because` Range `prop u^(2)`
`therefore` When u is doubled, range becomes 4 times.