It is a scalar quantity. It is a vector quantity. Distance doesn't decrease with time.
When a body is moving towards its initial point, then it indicates decrease in displacement with time, because the body is moving back to its initial position, hence displacement will be negative.
A moving object is always 'increasing' its total length moved with time. 'Curved lines' on a distance time graph indicate that the speed is changing. The object is either getting faster = 'accelerating' or slowing down = 'decelerating'. You can see that the distanced moved through each second is changing.
Because gravitational acceleration on earth is constant, the distance an object falls is proportional to the time spent falling.
(A):Displacement can decrease with time,but distance can never decrease with time. (R ):Distance can be many valued function ,but displacement can be single valued function.
The displacement x of a particle depend on time t as x = alpha t^2 - beta t^3.
"Displacement is directly proportional to time and directly proportional to velocity, which is directly proportional to time." Time is a factor twice, making displacement proportional to the square of time.
time (v = d/t), or equivalently, that time = distance/speed (t = d/v).
The odometer on a car measures how far the car travels. The speedometer measures how fast it travels. These two measurements are intimately connected: the faster the car goes, the farther it goes in a given time period, and vice-versa.
Answer. Answer: As an object moves, the distance it travels increases with time.
Basic Concept
The basic formula says Speed= Distance/Time . From this formula, it is evident that speed is directly proportional to distance and inversely proportional to time.
When the distance travelled by an object is directly proportional to the time, it is said to travel with constant speed.
Gravity decreases with distance.
Braking distance depends on how fast a vehicle is travelling before the brakes are applied, and is proportional to the square of the initial speed. This means that even small increases in speed mean significantly longer braking distances.
Speed or velocity is directly related to distance. The greater the speed of release, the greater the distance covered in flight.
The simple truth about speeding is: the faster you go, the longer it takes to stop and, if you crash, the harder the impact. Even small increases in speed could have severe consequences.
This form of time dilation is also real, and it's because in Einstein's theory of general relativity, gravity can bend spacetime, and therefore time itself. The closer the clock is to the source of gravitation, the slower time passes; the farther away the clock is from gravity, the faster time will pass.
The speed of an object equals the distance it travels divided by the time taken to cover that distance, while velocity, a vector quantity, equals displacement divided by time. In this equation for velocity, if we took the magnitude of displacement, then on the left-hand side we would have the magnitude of velocity.
Rate of change of displacement with time is called Velocity.
Part A: Average velocity is defined to be the displacement per time.
It is important to note that the distance traveled does not have to equal the magnitude of the displacement (i.e., distance between the two points). Specifically, if an object changes direction in its journey, the total distance traveled will be greater than the magnitude of the displacement between those two points.
Distance is the total path that is covered by an object. Hence distance can never be negative,the magnitude of distance can never decrease. So the answer to the question whether the distance is positive or not is yes,the distance is always positive.
Displacement is the shortest path travelled. So, it can be the same as the distance only if the distance itself is the shortest path, else the distance will be greater than displacement.
Explanation: The only way that the displacement and distance for the motion of the same object, over the same time period would be equal would be if the motion is in a straight line. If the motion was not a straight line, distance would be greater than displacement.
For constant speed, distance and time are in indirect variation. time varies inversely with respect to distance if speed is constant.