Which component of velocity of a projectile is constant?

Which component of velocity of a projectile is constant?

The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.

How do you find the velocity of a projectile?

Projectile motion equations

1. Horizontal velocity component: Vx = V * cos(α)
2. Vertical velocity component: Vy = V * sin(α)
3. Time of flight: t = 2 * Vy / g.
4. Range of the projectile: R = 2 * Vx * Vy / g.
5. Maximum height: hmax = Vy² / (2 * g)

What is the acceleration at the maximum height?

At a projectile’s highest point, its velocity is zero. At a projectile’s highest point, its acceleration is zero.

What happens to the horizontal velocity of a projectile?

Common mistakes and misconceptions. Remember: What happens in the vertical direction does NOT affect the horizontal direction, and vice versa. An object’s horizontal position, velocity, or acceleration does not affect its vertical position, velocity, or acceleration.

How does gravity affect a projectile?

Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity. The only force acting upon a projectile is gravity!

What does it mean when there is no air resistance?

Objects that are said to be undergoing free fall, are not encountering a significant force of air resistance; they are falling under the sole influence of gravity. Under such conditions, all objects will fall with the same rate of acceleration, regardless of their mass.

How do you find the air resistance of a projectile?

Mathematically, the resistive force represented by the vector F can be written as F=-f(v) u, where u=V/|V| is the unit vector along the direction of the velocity V. The minus sign guarantees that the air resistance acting on the projectile is always opposite to the direction of its velocity.

Does a projectile experience air resistance?

A projectile is a free-falling object. A projectile experiences negligible or no air resistance. A projectile must be moving in the downward direction. A projectile does not have to have horizontal motion.

How does air resistance affect maximum height of a projectile?

This air resistance affects a spacecraft when it re-enters the Earth’s atmosphere but also the path of a projectile such as a bullet or a ball. When air resistance is taken into account the trajectory of a projectile is changed. The maximum height, the range and the velocity of the projectile are all reduced.