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You tie a brick to the end of a rope and whirl the brick around you in a horizontal circle Describe the path of the brick after you suddenly let go of the rope?
If you suddenly let go of the rope, the brick will move in a direction tangent to the circle at that point. The only cause of circular motion is centripetal force which is tension of string or indirectly force of hand in this case. As soon as you vanish it, no circular motion is possible and projectile motion is performed.
A projectile fired from the ground follows a parabolic path The speed of the projectile is minimum at the top of its path?
Yep that is correct. To understand this it may help you to draw a parabola. If you draw a line from the top of the parabola back to the ground you'd notice either side of this line is symmetrical. This isn't quite what happens to a projectile (following a parabolic path), but because of the nature of the question, effects such as air resistance can be ignored. As the projectile approaches the top of its path, the vertical component of its velocity approaches zero. As the projectile begins to fall the magnitude of the vertical component of the projectile begins to increase. The only force that acts on the projectile during flight is gravity which pulls it towards the earth. Since this force and the horizontal component of the projectiles velocity are at right angles to each other, the horizontal component of the velocity is unaffected during flight . This explains the symmetry of the parabola and also means the time to reach the top of path equals the time from the top of path back to the ground. The projectile will hit the ground with the same speed as it left the ground. If you draw a horizontal line through the parabola, at the two points where the line and the parabola cross, the speed of the projectile will be the same. The only change to the balls speed during the flight comes as the vertical component of its velocity tends to zero as it reaches the top of the curve and then falling back down due to gravity. I'm unsure of your physics knowledge but hopefully this doesn't confuse you. If you have learned about vectors, then this can be simply understood/explained.
Why is a gun a third law of motion?
Newton's 3rd law states that "for every action, there is an equal and opposite reaction." This relates to guns because when one is fired, there is force applied not only to the projectile but also to the back of the barrel which causes what is known as recoil.
Which is the only active force a projectile is any moving object upon?
Gravity
Which map presents only the horizontal positions of the features represented?
planimetric
How does the gravity affect the two components of projectile motion?
Projectile motion has two components horizontal motion and vertical motion. Gravity affects only the vertical motion of projectile motion.
Why horizontal motion is constant?
Horizontal motion is only constant when it is not being affected by any forces, e.g. the horizontal motion of a projectile after it's shot.
Which of these components of projectile motion is not influenced by gravity?
Horizontal and vertical components which need to be treated independently from each other when working out either the horizontal or vertical motion.
Is projectile motion a motion in one dimension the direction of gravity?
No, gravity is only one of the vectors in projectile motion.
The height of a projectile in motion is dependent on what?
Projectile motion is a form of motion wherein an object moves along a curved path under the action of gravity only. The height of a projectile in motion is dependent on gravity.
Is the vertical motion of a projectile dependent on its horizontal motion?
They fall at the same rate. So if you aim at an object before it falls from a height and shoot just as it is released then the projectile will hit the falling object. This happens because gravity is always the same (at small heights) and has the same effect on the object with no horizontal displacement as it does on the projectile with horizontal displacement.
How many types of projectile motion?
Only one unfortunately.
How do you solve a projectile motion problem?
An object projected by force and continuing in motion by its own inertia.An objectile is a a projectile only when it is in a state of motion,usually it covers a parabola shape path.
What is the horizontal acceleration of a projectile as its position changes?
In the usual simple treatment of projectile motion, the horizontal component of the projectile's velocity is assumed to be constant, and is equal to the magnitude of the initial (launch) velocity multiplied by the cosine of the elevation angle at the time of launch.
What affects the vertical component of a projectile's velocity?
The effect that gravity has on the vertical component of the projectile is that as the projectile is going upward it is decreasing 10m/s ever second it is going upward until it reaches its peak. at its peak its vertical component is zero. Then as it is going back to earth it is increasing at 10 m/s every second that is it going downward. for example, a boy throws a ball at 20 m/s upward its velocity after 2 seconds will be zero due to the fact that gravity canceled out the force and then.. what is the velocity after 4 seconds? it is 20 m/s.. gravity added 10 m/s ever second that it was falling to the earth. hope this helps
What is projectile in physics?
An object that is in motion, only acted on by the force of gravity
For an object to be in projectile motion and what force must be acting on it?
Gravity must be the only force acting on the object, to produce downwards vertical acceleration. There is no force acting in the horizontal direction because there is no acceleration.
