Question

A projectile is thrown obliquely into the air from origin of a reference frame with y-axis vertically upward and $ x- $ axis perpendicular to y then equation of motion has the form

• A. $ y=ax+b{{x}^{2}} $
• B. $ y=a{{x}^{2}}+b{{x}^{3}} $
• C. $ y=a+bx $
• D. $ y=(a+b)x $

Answer 1

Answer: (A)

: For a projectile motion, the trajectory is a parabola. It is a first degree equation in y and second degree equation in $ x $ for a parabola. Hence the form of equation is $ y=ax+b{{x}^{2}} $ .
Here a and b are constants.