Advertisements
Advertisements
Question
Under which condition is the magnitude of average velocity equal to average speed ?
Advertisements
Solution
The magnitude of average velocity is equal to average speed when an object covers equal distances in equal intervals of time in a particular direction.
APPEARS IN
RELATED QUESTIONS
What name is given to the speed in a specified direction ?
Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.
Fill in the following blank with suitable word:
The physical quantity which gives both, the speed and direction of motion of a body is called its……………
If a bus travelling at 20 m/s is subjected to a steady deceleration of 5 m/s2, how long will it take to come to rest ?
A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey.
The graph given alongside shows how the speed of a car changes with time:
(i) What is the initial speed of the car ?
(ii) What is the maximum speed attained by the car ?
(iii) Which part of the graph shows zero acceleration ?
(iv) Which part of the graph shows varying retardation ?
(v) Find the distance travelled in first 8 hours.
A car accelerates at a rate of 5 m s-2. Find the increase in its velocity in 2 s.
The velocity-time graph of a moving body is given below in Figure
Total displacement.
Define average velocity and give one example.
Draw a diagram to show the motion of a body whose speed remains constant, but velocity changes continuously.
