It is acceleration in the horizontal direction. This would happen as a result of a net horizontal force acting on a body.
Acceleration
Zero.
The graph you described is a speed-time plot. If the line is horizontal, that indicates no change in speed over time. In other words, there is no acceleration (acceleration is zero), since there is no change in speed.
Constant speed ... zero acceleration.
-- constant acceleration -- speed increasing at a steady rate -- distance increasing as the square of the time since everything started
If the object is thrown upwards, the vertical acceleration is negative and the horizontal acceleration is zero.
utricle
Vertical means up or down, horizontal means left or right (or forward or backwards, but without changing the altitude).
Horizontal . . . acceleration is zero, speed is constant Vertical . . . acceleration is 'G' downward, speed constantly increases downward
a horizontal line :)
Acceleration
Zero.
The bullet fired from a gun has greater horizontal acceleration. For vertical acceleration, they are both the same.
This depends on what the graph represents. If it is a graph of velocity on the vertical and time on the horizontal, then if acceleration is at a constant rate, the graph will be a straight line with positive slope (pointing 'up'). If acceleration stops, then the graph will be a horizontal line (zero acceleration or deceleration). If it is deceleration (negative acceleration), then the graph will have negative slope (pointing down).
-- The only horizontal force on a thrown ball is the force of air resistance, so the horizontal acceleration is very small, and the horizontal speed stays almost constant. -- The vertical force on a thrown ball is the force of gravity, so the ball accelerates straight down at the acceleration of gravity. -- The result of unequal horizontal and vertical components of acceleration is a curved path.
the horizontal component remain unchanged because there in no acceleration in horizontal direction
9.8 meters (32.2 feet) per second2 downward.