Which statement about the horizontal distance covered by a projectile launched at an angle less than 90° is true?
a) the distance covered in equal time intervals is equal
b) the distance covered in equal time intervals increases
c) the distance covered in equal time intervals decreases
d) no horizontal distance is covered

Question

Which statement about the horizontal distance covered by a projectile launched at an angle less than 90° is true?
a) the distance covered in equal time intervals is equal
b) the distance covered in equal time intervals increases 
c) the distance covered in equal time intervals decreases
d) no horizontal distance is covered

festinger · Answer

horizontal component is not affected by gravity; applying newton's 2nd law that means no net force and thus no acceleration, so horizontal component of speed is constant. Thus, answer is (a)