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Is the total time of a ball thrown upwards is equal to the total time of a ball thrown in projectile provided that they have the same initial velocity?
Wiki User
∙ 13y ago
No.
However, the statement is true provided that the vertical component of the launch velocity for the two motions are the same.
You also require that both motions end at the same level and that the air resistance etc can be disregarded. The first of these may not always be valid in school exercises, the second is usually implicit.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoyes, i am a scientist and i have tried this in class
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What is projectile velocity?
Velocity is the time rate of change of displacement of an object. Velocity is the distance travelled in unit time in a stated direction. It is a vector quantity since it gives us both magnitude and direction.
What angle for firing projectiles gives longest time?
45 degrees to the horizontal will give the maximum flight time for a projectile. If a projectile was fired at 90 degrees to the horizontal, (straight upwards) the projectile will go straight upwards (ignoring the shape, form and aerodynamic properties of the projectile). Likewise if you were to fire a projectile at 0 degrees to the horizontal, the projectile would follow said course, IF gravity was not in effect; a projectile needs some form of vertical velocity to overcome gravity. Hence why 45 degrees will give you the longest distance and consequently flight time.
In the absence of air friction does the horizontal component of a projectile's velocity change as the projectile moves is this True False?
A projectile will travel on a straight line unless external forces act upon it. Gravity will pull the projectile downward, i.e. affect its vertical velocity component. This is why the projectile will decelerate upwards, reach a maximum elevation, and accelerate back down to earth. The force vector of air resistance points in the opposite direction of motion, slowing the projectile down. For example, If the projectile is going forward and up, air resistance is pushing it backwards (horizontal component) and down (vertical component). Without air resistance, there is no external force acting upon the horizontal velocity component and the projectiles ground speed will stay constant as it gains altitude and falls back down to earth.
When object moves upwards what is the velocity and acceleration?
When an object is moving upwards, its velocity is directed upwards. If the object is near the Earth or any other planet, then its acceleration is directed downwards, which also means that its upward velocity is decreasing.
What is its velocity at the highest point of a ball vertically upwards?
In that case, the velocity is zero.
An object is thrown vertically upwards from the top of a tower of height 39.2 meters reach the ground in 4 secons Find the velocity with which it is thrown upwards?
Using the equation: x=vot+(1/2)at2 x: -39.2m (though the object is thrown upwards, its total displacement is just the amount it fell from the tower). vo: initial velocity t: 4 s a: -9.8m/s2 (assuming we're on the earth's surface) -39.2=vo(4 s)+(1/2) (-9.8m/s2)(4 s)2 ((78.4 m - 39.2 m)/ 4 s) = v0 So the initial velocity is 9.8 m/s.
A body is thrown vertically upward What is the magnitude of its acceleration?
A projectile fired directly upwards has no positive velocity. Its only velocity is attributed to the force of gravity, which is -9.8 meters per second squared.
What is the velocity of object when it is thrown above?
The velocity of such an object changes all the time. Assuming you throw something directly upwards and there is no wind, it will go upwards, slower and slower, until it reaches its highest point. At that moment, its velocity is zero. Then, still as a result of gravity, it will move downward, faster and faster.
When is velocity antiparallel to acceleration?
when a ball is thrown upwards velocity increases but acceleration decreases hence making it anti parallel to each other
Why does a projectile move upwards when thrown upwards even though a force of gravity acts downwards on it?
In the act of "throwing", the thrower imparts an upward velocity to the object, by temporarily applying an upward force to it that's greater than the downward force of gravity. During that brief period, the sum of the forces on the object is directed upward, so it accelerates in that direction. After the throwing ends, however, the only force on the object is the force of gravity, directed downward, so its acceleration is downward. That means that the upward velocity becomes smaller and smaller, until it's zero at the peak of the arc, and the velocity then becomes downward as the object begins to fall from its peak..
When tossing a coin upwards what happens to its velocity while ascending what happens to its acceleration?
Its velocity decreases because gravity is pulling on it as it goes up. Its acceleration increases.
Why projectile follow a curve path?
A projectile, launched by an initial force, such as exploding gunpowder in the barrel of a gun, travels in a straight line unless it is acted upon by another force. A projectile launched into the air from the earth's surface, is subject to the acceleration of gravity, which bends it's trajectory into a parabolic arc back to earth.
