A: An object moving with a velocity of magnitude 10 m/s is subjected to a uniform acceleration `2 m//s^(2)` at right angle to the initial motion. Its velocity after 5 s has a magnitude nearly 14 m/s
`rarr rarr rarr`
R: The equation `vec(v) = vec(u) + vec(a)t` can be applied to obtain `vec(v)` if `vec(a)` is constant
A. If both A and B are true and R is the correct explanation of A
B. If both A and R are true but R is not correct explantion of A
C. If A is true but R is false
D. If A is false but R is true