Advertisements
Advertisements
प्रश्न
When is the acceleration due to gravity negative?
Advertisements
उत्तर
If the body rises vertically upwards, then the value of acceleration due to gravity is negative.
संबंधित प्रश्न
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
Define acceleration. State its unit.
Distinguish between acceleration and retardation.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.

Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?
A ball is rolling from A to D on a flat and smooth surface. Its speed is 2 cm/s. On reaching B, it was pushed continuously up to C. On reaching D from C, its speed had become 4 cm/s. It took 2 seconds for it to go from B to C. What is the acceleration of the ball as it goes from B to C?

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?
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 constant acceleration but with Zero velocity.
The slope of a velocity-time graph gives ______.
The acceleration of the body that moves with a uniform velocity will be ______.
