Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
If the acceleration of a moving body is constant in magnitude and direction then the path of the body must not be a straight line because in circular motion also acceleration of a body is constant in magnitude and always directed towards the centre.
So the path of the body may be a straight line and may be a circular one.
APPEARS IN
संबंधित प्रश्न
Define the term acceleration due to gravity. State its average value.
A space craft flying in a straight course with velocity of 75 km s-1 fires its rocket motors for 6.0 s. At the end of this time its speed is 120 km s-1 in the same direction.
Find
(i) The space craft's average acceleration while the motors were firing
(ii) The distance travelled by the space craft in the first 10 s after the rocket motors were started, the motors being in action for only 6 s.
The change in velocity of a motorbike is 54 kmh−1 in one minute. Calculate its acceleration in (a) ms−2 (b) kmh−2.
Diagram is given below shows velocity – time graph of car P and Q, starting from the same place and in the same direction. Calculate the Acceleration of car Q between 2 s – 5 s.

The acceleration of a body is 8.5 ms-2. What does this statement mean?
The speed of a car increases from 10 km/h to 64 km/h in 10 seconds. What will be its acceleration?
State if the following situation is possible:
A body moving with a constant velocity in an accelerated motion.
Negative acceleration is called ______.
When an object undergoes acceleration ______.
Assertion: A positive acceleration of a body can be associated with the slowing down of the body.
Reason: Acceleration is a vector.
