Physics
Grade-10
Easy
Question
When an object falls towards the earth, its acceleration towards the earth is ____ the acceleration of the earth towards the object.
- Greater than
- Smaller than
- Equal to
- Dependent on
Hint:
When an object falls on the ground its force is in the same direction as gravitational force.
The correct answer is: Greater than
The correct option is a)Greater than.
When an object falls to Earth, it is accelerated by gravity, gaining velocity and momentum until the upward force due to air resistance exactly balances the downward force due to the weight of the object under gravity. This is the point known as the terminal velocity.
The gravitational potential energy that an object has at the beginning of its fall is converted into kinetic energy as it falls, and this kinetic energy is used to produce sound, bounce the object, and deform the object when it hits the ground.
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