The answer is 15s by the way.
Acceleration increases
When a ball increases in speed by the same amount each second, its acceleration is constant. This type of motion is known as constant acceleration.
The velocity increases at a constant rate.
The answer is very simple. The words "constant velocity" are the definition of zero acceleration.
If the force applied to a mass increases, its acceleration will also increase, assuming the mass stays constant. This is described by Newton's Second Law, (F = ma), where force is directly proportional to acceleration when mass is constant. Conversely, if the force decreases, the acceleration will also decrease as per the relationship defined by the law.
An object that moves with constant position will have constant velocity or acceleration. This is said to be moving in positive direction and maintains the position.
The acceleration of the car is 0 m/s^2, since it is maintaining a constant velocity. Acceleration is the rate of change of velocity, and since the velocity is constant, there is no change in velocity and thus no acceleration in this case.
No. Acceleration IS a change of velocity - any change. When velocity increases, there IS acceleration. The acceleration itself may be increasing, decreasing, or remain constant.
When acceleration is held constant, mass and force are directly proportional according to Newton's second law of motion (F = ma). This means that the force required to maintain a constant acceleration increases as the mass of the object increases. Conversely, if force is held constant, acceleration would be inversely proportional to mass.
If the force on an object increases while its mass remains constant, the object's acceleration will also increase. This is because acceleration is directly proportional to the force acting on the object, according to Newton's second law of motion (F = ma).
On a graph of speed versus time, where time is plotted along the horizontal (X) axis and speed along the vertical (Y) axis: -- constant speed (zero acceleration) produces a straight, horizontal line; -- constant acceleration produces a straight, sloped line; the slope of the line is equal to the acceleration; -- if the acceleration is positive, the line slopes up to the right (speed increases as time increases); -- if the acceleration is negative, the line slopes down to the right (speed decreases as time increases).
force = mass * acceleration then mass and acceleration is inversly proportional. Actually mass is constant but when the speed increases the mass become less since acceleration and velocity is directly propotional thus acceleration increases too.....thx..with best regards..