Advertisements
Advertisements
प्रश्न
What does a positive acceleration mean?
Advertisements
उत्तर
Positive acceleration corresponds to situation when velocity is continuously increasing with respect to the time.
APPEARS IN
संबंधित प्रश्न
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 .
Give an example of an accelerated body, moving with a uniform speed.
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.
A motor bike running at 90 kmh−1 is slowed down to 18 kmh−1 in 2.5 s. Calculate
- acceleration
- distance covered during slow down.
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
The initial velocity of a car is 10 ms-1. It moves with an acceleration of 2 ms-2. What will be its speed after 10 seconds?
Sketch the shape of the velocity-time graph for a body moving with:
Uniform acceleration.
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
m/s2 is the unit of ______.
