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
Distinguish between acceleration and retardation.
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.
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 P.
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.
An aeroplane lands at 216 kmh−1 and stops after covering a runway of 2 m. Calculate the acceleration and the time, in which it comes to rest.
A cyclist driving at 36 kmh−1 stops his motion in 2 s, by the application of brakes. Calculate
- retardation
- distance covered during the application of brakes.
A body falls towards the earth. Does it have positive or negative acceleration?
State if the following situation is possible:
A body moving with a constant velocity in an accelerated motion.
From the given v-t graph it can be inferred that an object is
Assertion: Position-time graph of a stationary object is a straight line parallel to the time axis.
Reason: For a stationary object, the position does not change with time.
