A distance-time graph shows how far an object has travelled in a given time. It is a line graph that denotes distance versus time for finding speed. Distance is plotted on the Y-axis. Time is plotted on the X-axis. N.B: Curved lines on a distance-time graph represents that the speed is changing. A Distance-Time Graph’s …
Acceleration Definition The rate of change of velocity with respect to time. Acceleration is a vector quantity as it has both magnitude and direction. Formula of Acceleration : – Average acceleration The average acceleration over a period of time is defined as the total change in velocity is divided by the total time taken . …
What is acceleration ? Write S I unit and CGS unit of acceleration . Read More »
Solution:Total distance covered by Usha in 1 min is 180 m.Displacement of Usha in 1 min = 0 mAverage speed = Total distance covered / Total time taken = 180 m / 1 min = 180 m / 60 s = 3 m s-1Average velocity = Displacement / Total time taken = 0 m / …
Solution:Distance covered by the car,s = 2400 km – 2000 km = 400 kmTime elapsed, t = 8 hAverage speed of the car is, vav = s / t =400 km / 8 h = 50 km h–1 = 50 x 1000 m / 3600 s = 13.9 m s–1 The average speed of the …
“Average velocity is given by the arithmetic mean of initial velocity and final velocity for a given period of time.” That is Average Velocity =Total Displacement / Total Time takenMathematically, Speed and velocity have the same units, S I unit is m s–1 or m/s CGS unit of velocity is cm/s or, cms-1
Definitions “The rate of change of distance of an object in any direction is called Speed.“ Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude. Speed FormulaThe formula of speed is given in the …
Solution: Total distance travelled by the object =16 m + 16 m = 32 mTotal time taken = 4 s + 2 s = 6 s Average speed =Total distance travelled / Total time taken = 32 m / 6 s = 5.33 m s–1Therefore, the average speed of the object is 5.33 m s–1. …
