answersLogoWhite

0


Best Answer

gravity is force of attraction that exists between masses , the earth being one (large ) mass , and you , another. Just by standing on the earth the soles of your feet will register the force of attraction between you, although you can overcome the entire earths gravity by(for instance) climbing some stairs.

Although the earths gravity diminishes the further you get away from it, you have to travel a good distance away before you notice the difference, so in practical terms the earths gravity remains constant and about the earths surface will produce an acceleration towards its centre of about 9.8((m/s)/s), that is to say if you drop a stone from a tower its velocity increase will be 9.8m/s over each one second interval, for example:

time from drop(s) velocity(m/s)

0 ----------------------0

1 ----------------------9.8

2 ---------------------19.6

3 ---------------------29.4

see also equation : force = mass * acceleration (issac newton)

so essentially if you apply a constant force (in this case, gravity ) to a mass (stone ), it will gain speed (accelerate) uniformly

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why the acceleration due to gravity is 9.8 meter per second and velocity is changed?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Physics

Why does gravity change velocity?

Gravity exerts a force on objects; such a force (if not counteracted by some other force) will cause an acceleration, according to Newton's Second Law. The amount of the acceleration can be calculated as a = F/m.


What is the velocity of a ball dropped on the surface of Mars if the acceleration of gravity is 3.7 meters per second squared?

When given a constant acceleration, just multiply it by time, t, to detemine the final velocity. If the initial velocity was zero (as is the case when you drop something), then the average velocity is half the terminal velocity.


Why does gravity make falling objects fall faster?

By Newton's Second Law: force = mass x acceleration, or acceleration = force / mass. Since there is a force, there should be an acceleration - a change of velocity.


What is acceleration and its si unit?

Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.


What is the definition for the rate of motion?

The rate of change of motion is known as acceleration. Acceleration is the change in velocity over change in time. Velocity is the rate of change of position, or change in position over change in time.

Related questions

Why does gravity change velocity?

Gravity exerts a force on objects; such a force (if not counteracted by some other force) will cause an acceleration, according to Newton's Second Law. The amount of the acceleration can be calculated as a = F/m.


How many meters per second is the costant equal to the acceleration of gravity?

It is about 9.814 meters per second per second on Earth


What is the velocity of a ball dropped on the surface of Mars if the acceleration of gravity is 3.7 meters per second squared?

When given a constant acceleration, just multiply it by time, t, to detemine the final velocity. If the initial velocity was zero (as is the case when you drop something), then the average velocity is half the terminal velocity.


Why does gravity make falling objects fall faster?

By Newton's Second Law: force = mass x acceleration, or acceleration = force / mass. Since there is a force, there should be an acceleration - a change of velocity.


What is the metric unit for acceleration?

Acceleration is the change in velocity over time.In SI units, acceleration is measured in metres per second squared (m/s2).g is the symbol for the average acceleration produced by gravity at the Earth's surface.The actual acceleration of gravity varies from place to place, depending on latitude, altitude, and local geology.The standard acceleration of gravity g is defined to be exactly 9.80665 meters per square second (m/s2).That is about 32.17405 feet per second squared.


How are veloc ty and acceleration related?

Acceleration is the rate of velocity incerease: > Acceleration = velocity increase / time > Units : metres per second increase per second


What is 9.8 ms to the power of 2?

9.8 m/s squared is the acceleration due to gravity on earth. So if you drop any object from a certain point it will accelerate at 9.8 m/s squared down.


What is acceleration and its si unit?

Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.Acceleration is the rate of change of velocity - how fast a velocity changes. Therefore, its units are naturally (meters/second) / second, usually written as meters/second2.


What is the definition for the rate of motion?

The rate of change of motion is known as acceleration. Acceleration is the change in velocity over change in time. Velocity is the rate of change of position, or change in position over change in time.


What is simple acceleration?

It is the rate of change of velocity. If the velocity changes from five to six meters per second in one second, then the acceleration is one meter per second per second.


Why do we a use the units meters per second squared when we talk about acceleration?

For every second of acceleration the velocity is increased by that acceleration.


What units are used to represent acceleration?

Velocity (acceleration x time = velocity).