MCQ
The equation of a projectile is $y=a x-b x^2$. Its horizontal range is ......
- ✓$\frac{a}{b}$
- B$\frac{b}{a}$
- C$a+b$
- D$b-a$
✓
Answer
Correct option: A.
$\frac{a}{b}$
a
(a)
(a)
$y=a x-b x^2$
When the body lands then $y=0, x=R, 0=a R-b R^2$
$a R=b R$
$R=\frac{a}{b}$
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