Advertisements
Advertisements
Questions
Define the term acceleration due to gravity. State its average value.
What do you understand by the term acceleration due to gravity?
Advertisements
Solution
When a body falls freely under gravity, the acceleration produced in the body due to the Earth's gravitational acceleration is called the acceleration due to gravity. It is represented by ‘g’. The average value of g is 9.8 m/s2.
APPEARS IN
RELATED QUESTIONS
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
Define acceleration. State its unit.
Give one example of the following motion:
Uniform retardation
A racing car is moving with a velocity of 50 m/s. On
applying brakes, it is uniformly retarded and comes to rest in 20 seconds. Calculate its acceleration.
Out of energy and acceleration, which one is a vector?
The distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?
A car accelerates to a velocity of 30 m/s in 10 s and then decelerates for 20 s so that it stops. Draw a velocity-time graph to represent the motion and find:
The Deceleration.
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.
What do you understand about negative acceleration?
The acceleration of the body that moves with a uniform velocity will be ______.
