In a plane projectile motion, the angle between instantaneous velocity vector and acceleration vertor can be anything between 0 or pi (excluding the limiting case). In plane-to-plane projectile motion, accleration vector is always pointing vertical downwards. (neglect air friction).

In a plane projectile motion, the angle between instantaneous velocity

1.	In a plane projectile motion, the angle between instantaneous velocity vector and acceleration vertor can be anything between 0 or pi (excluding the limiting case). In plane-to-plane projectile motion, accleration vector is always pointing vertical downwards. (neglect air friction).
Answer» Statement (I) is true, Statement (II) is true , statement (II) is the CORRECT EXPLANATION for Statement (I). Statement (I) is true, Statement (II) is true , statement (II) is not the correct explanation for Statement (I). Statement (I) is true, Statement (II) is false. Statement (i) is false, Statement (II) is true. Solution :(b) Before attaining the maximum height, angle is ACUTE and after this the angle is obsuse. At the highest point, it is perpendicular.