Question

Which of the following is true regarding projectile
motion?
(a) horizontal velocity of projectile is constant
(b) vertical velocity of projectile is constant
(c) acceleration is not constant
(d) momentum is constant

Answer 1

Answer:

Which of the following is true regarding projectile

motion?

(a) horizontal velocity of projectile is constant ✔️✔️

(b) vertical velocity of projectile is constant

(c) acceleration is not constant

(d) momentum is constant

Answer 2

Answer:

The true statement is horizontal velocity of the projectile is constant.i.e.option(a).

Explanation:

Let's analyze the options one by one.

(a) Horizontal velocity of the projectile is constant- As no gravitational force is acting in the horizontal direction the component of the velocity in the horizontal direction remains constant.

(b) Vertical velocity of the projectile is constant- the vertical component of velocity experiences acceleration due to gravity and hence it cannot be constant. So, this option is wrong.

(c) Acceleration is not the constant-The vertical velocity of the projectile is not constant due to the acceleration that acts on the object is the acceleration due to gravity i.e. 9.81m/s2. So, this option is also false.

(d) Momentum is constant-As we know that the velocity of the object in the vertical direction is not constant and the momentum depends on the velocity. So, this statement is wrong.

Hence, the true statement is horizontal velocity of the projectile is constant.i.e.option(a).