Question

Which of the following is the essential characteristic of a projectile?
a) Zero velocity at the highest point
c) velocity inclined to the horizontal
b) Constant acceleration perpendicular to the velocity
d) None of these​

Answer 1

Answer:

b) Constant acceleration perpendicular to the velocoty.

Explanation:

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Answer 2

Answer:

Option D is the right option.

Explanation:

Velocity of the body at the highest point is not equal to 0. Only the vertical component of the velocity becomes 0.

So Point A is wrong.

It is not compulsory that velocity should always be inclined to the horizontal for a particle to undergo projectile motion.

For example, When we throw a ball horizontally from a building it follows a projectile motion.  

So Point B is wrong

Acceleration in a projectile motion is not always perpendicular to the velocity. The angle between velocity and acceleration of a particle during a projectile motion keeps on changing.

So Point C is wrong.

Hence none of the above is the right answer.