If an Object is accelerating, is it necessarily moving? Explain.?
971038
Not necessarily, if an object is moving and wants to reverse it's motion,  acceleration is opposite to the direction of movement, the object slows down till it's velocity reaches 0 then increases to the opposite direction.\n\nAt the moment of of 0 velocity, the object is still although it has acceleration.
209689
mass in motion stays in motion unless disrupted by another force!
287006
Terminal Velocity.  It depends on the weight of the object because it is based on gravity.  If there is force applied to the object then it could travel faster for moments then gravity would slow it down.
845422
This is related to Newton's law: An object in motion or at rest will stay in motion or at rest unless acted upon by an external force.\n\nTo elaborate, an object travelling in a straight line will keep on travelling in that straight line at a constant speed unless something acts on it.\n\nWhen you are in the car with your ball, everything in the car is travelling at the same speed, so you through the ball up and it comes straight back down. But if you throw the ball up and then jam on the cars brakes, the ball will keep moving at its original speed but the car is slowing down, so the ball would fly forward into the front windshield.\n\nLast point, if you throw the ball out the window, it will appear to fly backwards - It is just slowing down compared to the car because unlike the air inside the car, the air outside is at rest, so the ball will be flying through the air at a high speed and the wind drag will slow it quite rapidly.
372574
If the vehicle is moving at a constant speed, then the object is moving forward at that same speed before being tossed. After it is tossed, it continues to move forward at the same speed (as you and the vehicle) because there is nothing to slow it down.\n\nTry tossing the object when the vehicle is accelerating. The object, after being tossed, does not enjoy the acceleration that you and the vehicle do, but instead continues to move forward at the speed it had when tossed, and will land "behind" you. This is the principle behind a famous result of Einstein. If the vehicle has no windows, you can't tell whether the vehicle is accelerating, or standing still with "gravity" pulling tossed objects toward the back of the vehicle. Even if you try to use a beam of light to determine acceleration or gravity, you will get the same bending of the light beam.
473407
An object in motion remains in motion unless it is acted upon by an outside force.  Say you're traveling in a train going 200 miles an hour, jumping on a trampoline.  Before you jump, both you and the train are moving 200 miles an hour forward.  When you jump, you'll begin moving upward at about 5 mph, but you'll still be going 200 mph forward as well, just like the train.  When you come back down, you'll meet the trampoline exactly where you left, because you, the train, and the trampoline have all been moving forward at the exact same speed.  Here's another example:  The circumference of the earth is around 24,000 miles, and the earth completes one revolution per day.  That means that, in one day, you travel in a 24,000 mile circle, yet you don't feel that you are moving because everything else is moving at the exact same speed.
426497
Everything travels in a straight line unless acted upon by an outside force.\n\nMore precisely, everything travels at the same velocity (speed and direction) unless acted upon by an outside force.
265616
The two key elements in this question are that the speed of the spacecraft is constant, and that you are at rest relative to the spacecraft.  In this situation, you will observe the beam of light moving forward and hitting the object just the same as if you were sitting in your living room.  This is in accordance with Einstein's Special Theory of Relativity.\n\nHowever, if the spacecraft were accelerating instead of moving at a constant speed, the same might not be true. As long as the spacecraft continues to accelerate, even at speeds below the speed of light, it is possible to set up a scenario in which the spaceship stays ahead of the beam of light forever!  This is in accordance with Einstein's General Theory of Relativity, which considers the effects of acceleration and gravity on light.
874216
its newtons first law, (objects in rest stay at rest unless a force is acted upon it which causes acceleration) and objects in motion stays in motion\n\naka intertia keeps the smaller peices moving in the same direction
392981
Is the speed at which it travels.
233087
this is where relativity comes into play. It depends from what viewpoint. speed is always relative to a "fixed" point (which might not be so "fixed" after all). get my drift?
25198
You can't be in a vehicle going the speed of light, because as objects accelerate they gain mass and a car going the speed of light would be insanely massive.
805410
Let me ask you a question. \n\n If I shot a bullet straight up, and then dropped a feather..  would the falling object move faster than the one going upwards?
118159
it increases its velocity if it has positive acceleration. In other words, if its velocity is in the same direction as its acceleration.
260158
Suppose you are accelerating due to the presence of some mass M and you are some distance r away from the mass. You yourself have mass m. Then we know that your gravitational potential energy is equivalent to your maximum kinetic energy. Thus GMm/r = (1/2)*mv^2, or v = Sqrt[2GM/r]. If you start far enough away, you can take r to be the radius of the mass you are accelerating towards and then v will be your velocity as you hit the ground, not accounting for relativistic effects. \nIf you are in a starship and using some sort of propulsion relative to some inertial space-time frame, you have an asymptotic upper limit of c as measured from any such  frame, from basic relativity theory.\nIf you are not moving relative to an inertial frame (ie., you are using a gravity drive as described in the source link), then your "velocity" is not limited by any theory in contemporary physics.
716223
The change in velocity of an object undergoing uniform acceleration, a, for a given time, t, is given by:\nv = at\nwhere v is the change in velocity of the object.\n\nIf the object is accelerating at a constant rate of 10 m/s^2 for 5 seconds, the change in velocity the object experiences is 50 m/s.\nSince (we assume) the object started from rest, the objects final velocity after 5 seconds is 50 m/s.\n\nTo find the average velocity, divide the total displacement of the object by the total time.\nIn this case, the object has traveled 125 meters in the 5 seconds it has been accelerating (d = 1/2 at^2), so dividing this by 5 seconds and we get an average velocity of 25 m/s.
716944
If there is no net force (i.e. sum of forces is zero) then there will be no change in velocity. So if the object was going 15 m/s and the net force is zero, then it will still be going 15 m/, (for 2 sec = 30 meters traveled). Same concept for your jet car - constant velocity means no net force ( there may be forces acting on it, but if the velocity is constant, they must sum to zero - net force is zero).\n\nAs Newton's first law says, "An object in motion tends to stay in motion unless acted on by an outside force." So constant velocity (i.e. stays in motion at the same velocity) means no net force acting on the object.