Advertisements
Advertisements
प्रश्न
The acceleration of a body is 8.5 ms-2. What does this statement mean?
Advertisements
उत्तर
If a body has acceleration of 8.5 ms-2 then it means its velocity is increasing at a rate of 8.5 ms-1 per second.
APPEARS IN
संबंधित प्रश्न
Give one example of the following motion:
Uniform retardation
A train moving with a velocity of 20 ms−1 is brought to rest by applying brakes in 5 s. Calculate the retardation.
The acceleration of a moving body is constant in magnitude and direction. Must the path of the body be a straight line?
If not, given an example.
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
A car is moving with a speed of 50 km/h. One second later, its speed is 55 km/h. What is its acceleration?
Negative acceleration is called ______.
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.
Acceleration is defined as the rate of change of ______.
If a body starts from rest, what can be said about the acceleration of the body?
Assertion: A negative acceleration of a body can be associated with speeding up of the body.
Reason: Increase in the speed of a moving body is independent of its direction of motion.
