Advertisements
Advertisements
प्रश्न
Distinguish between acceleration and retardation.
उत्तर
Acceleration is the increase in velocity per second, while retardation is the decrease in velocity per second. Thus, retardation is negative acceleration. In general, acceleration is taken positive, while retardation is taken negative.
APPEARS IN
संबंधित प्रश्न
State the type of motion represented by the following sketches in Figures.
Give an example of each type of motion.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
A racing car is moving with a velocity of 50 m/s. On
applying brakes, it is uniformly retarded and comes to rest in 20 seconds. Calculate its acceleration.
A cyclist driving at 5 ms−1, picks a velocity of 10 ms−1, over a distance of 50 m. Calculate
- acceleration
- time in which the cyclist picks up above velocity.
Interpret the following graph:
The Unit of acceleration is ______.
What is meant by negative acceleration?
A bus accelerating with 4ms-2 changes its speed from 60ms_1 to a certain value in 5s. The final speed is ______.
Acceleration is a scalar.
What is the difference between uniform acceleration and non–uniform acceleration?
