Advertisements
Advertisements
प्रश्न
Distinguish between acceleration and retardation.
Advertisements
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
A body is moving vertically upwards. Its velocity changes at a constant rate from 50 m s−1 to 20 m s−1 in 3 s. What is its acceleration?
Draw a graph for acceleration against time for a uniformly accelerated motion. How can it be used to find the change in speed in a certain interval of time?
If a body is moving with a constant velocity its acceleration is ______.
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.
Can you use the relation [B1]?
What happens to the stepwise increasing speed-time graph when the size of each step is made very small?
Convert the following acceleration:
7200 km/h2 into m/s2
Convert the following acceleration:
1/36 m/s2 into km/h2
Exercise Problem.
A racing car has a uniform acceleration of 4 ms–2. What distance it covers in 10 s after the start?
