Why horizontal motion of a projectile has a zero acceleration?
Table of Contents
- 1 Why horizontal motion of a projectile has a zero acceleration?
- 2 When a projectile is flying through the air what is magnitude of the acceleration?
- 3 When no air resistance act on a projectile is horizontal acceleration is?
- 4 How does angle affect projectile motion?
- 5 How do you find the magnitude of velocity in projectile motion?
Why horizontal motion of a projectile has a zero acceleration?
The horizontal acceleration is zero for projectile motion because there is no force acting on the projectile that would produce any acceleration in the horizontal direction. Acceleration is the result of a net force acting on an object.
Why does the projectile not matter when there is no air resistance?
In the absence of air resistance there are no forces or components of forces that act horizontally. In the absence of air resistance the only force acting on a projectile in flight is the weight of the object. Weight by definition acts vertically downwards, hence no horizontal component.
When a projectile is flying through the air what is magnitude of the acceleration?
Correct Concept: The acceleration of all projectiles on Earth is 9.8 m/s/s regardless of the mass of the projectile.
What changes as a projectile travels through the air?
As a projectile moves through the air it is slowed down by air resistance. Air resistance will decrease the horizontal component of a projectile. The effect of air resistance is very small, but needs to be considered if you want to increase the horizontal component of a projectile.
When no air resistance act on a projectile is horizontal acceleration is?
d. The vertical acceleration is B; it is always downwards. e. The net force on a projectile is B (there is only one force – gravity; and it is downwards)….Horizontally Launched Projectiles.
| Horizontal Motion | Vertical Motion | |
|---|---|---|
| Velocity (Constant or Changing?) | Constant | Changing (by 9.8 m/s each second) |
What is the acceleration of the horizontal motion of a projectile?
No horizontal acceleration Nothing accelerates a projectile horizontally, so horizontal acceleration is always zero.
How does angle affect projectile motion?
Higher launch angles have greater times in the air The time in air is determined by the initial vertical velocity. Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the time in air.
What is the magnitude and direction of the acceleration vector of a projectile?
A projectile with an downward component of motion will have a downward component of acceleration. The magnitude of the vertical velocity of a projectile changes by 9.8 m/s each second. The vertical velocity of a projectile is 0 m/s at the peak of its trajectory.
How do you find the magnitude of velocity in projectile motion?
The magnitudes of the components of displacement s → along these axes are x and y. The magnitudes of the components of velocity v → are v x = v cos θ and v y = v sin θ , v x = v cos θ and v y = v sin θ , where v is the magnitude of the velocity and θ is its direction relative to the horizontal, as shown in Figure 4.12.
What affects projectile motion?
FACTORS AFFECTING PROJECTILE MOTION There are three main factors that affect the trajectory of an object or body in flight: the projection angle, magnitude of projection velocity and height of projection.