Advertisements
Advertisements
प्रश्न
Define the term acceleration due to gravity. State its average value.
What do you understand by the term acceleration due to gravity?
Advertisements
उत्तर
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
संबंधित प्रश्न
A body is moving vertically upwards. Its velocity changes at a constant rate from 50 m s−1 to 20 m s−1 in 3 s. What is its acceleration?
A toy car initially moving with uniform velocity of 18 km h-1 comes to a stop in 2 s. Find the retardation of the car in S.I. units.
Figure shows the velocity-time graphs for two cars A and B moving in the same direction. Which car has greater acceleration? Give reasons to your answer.
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.
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 distance covered by a body is directly proportional to the square of the time elapsed. What can you say about its acceleration?
State if the following situation is possible:
A body moving horizontally with an acceleration in vertical direction.
A body has an acceleration of -3.5 ms-2. What is its retardation?
A quantity has a value of 16ms-2. It is the ______.
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.
