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प्रश्न
What does a positive acceleration mean?
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उत्तर
Positive acceleration corresponds to situation when velocity is continuously increasing with respect to the time.
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संबंधित प्रश्न
If a body is moving with a constant velocity its acceleration is ______.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity and variable 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.
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
The speed of a car increases from 10 km/h to 64 km/h in 10 seconds. What will be its acceleration?
A body has an acceleration of -3.5 ms-2. What is its retardation?
Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction or both of them.
Reason: Acceleration can be produced only by change in magnitude of the velocity. It does not depend the direction.
The Unit of acceleration is ______.
A car is being driven at a speed of 20ms-1 when brakes are applied to bring it to rest in 5 s. The deceleration produced in this case will be ______.
