There are three types of forces acting on the ball
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Guest fromFeb 3, 2026 2:42 PM
Yes
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Lauren fromFeb 3, 2026 3:15 PM
Friction gas two types
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Guest fromFeb 3, 2026 3:17 PM
Friction has two types
Static friction
Kinetic friction
Including other force i.e.
Applied force and gravity force
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Tavia fromFeb 3, 2026 3:43 PM
Task is also asking how they interact with the ball
For the applied force,
The hand the boy exerts an applied force on the ball which changes the state of rest of the ball to the state of motion.
2. Friction,
Static friction is a force that keeps an object at rest. The static friction provided the grip between the ball and the boy's hand and the ball and the ground. The grip enabled the push force from the boy's hand create the rolling effect on the ball. The static friction acted on the ball again when it stopped at Five meters.
Kinetic friction is the frictional force that opposes the relative motion of two objects in contact, arising from the rubbing surfaces. When the ball started rolling, the kitchen netic friction started reducing the energy from the rolling ball slowing it down.After five meters, the ball had no energy left and stopped.
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Tavia fromFeb 3, 2026 3:49 PM
The gravitational force too or gravity.
This is a fundamental force of attraction that exists between any two objects with mass.
Gravity between the earth and the ball is responsible for keeping the ball on the ground as it rolls.
That is the role of the above forces
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Tavia fromFeb 3, 2026 3:49 PM
The gravitational force too or gravity.
This is a fundamental force of attraction that exists between any two objects with mass.
Gravity between the earth and the ball is responsible for keeping the ball on the ground as it rolls.
That is the role of the above forces
A
Angel fromFeb 3, 2026 3:53 PM
Contact and non contact forces are also there.
The contact forces are:
1. Applied force
An applied force is the force that is exerted by an object on one or more other objects.
The hand the boy exerts an applied force on the ball which changes the state of rest of the ball to the state of motion
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Lauren fromFeb 3, 2026 3:55 PM
The other contact forces are friction which is classified in to the static friction and the kinetic friction
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Lauren fromFeb 3, 2026 3:56 PM
But the non contact forces can include the gravitational force as explained by Tavia
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Angel fromFeb 3, 2026 3:58 PM
Is normal force applicable here.
The answer is yes and it is under the contact forces but not the non contact
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Tavia fromFeb 3, 2026 4:03 PM
Yes the normal force is a contact forces.
Normal force is the force that surfaces exert to prevent solid objects from passing through each other.
The normal force between the surface of the ball and the surface of the ground was strong enough to prevent the ball from either losing its all round shape or sinking into the ground. This enabled the ball to roll.
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Judith fromFeb 3, 2026 4:11 PM
Friction has two types ,i.e static and kinetic friction including applied force and gravity force
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Guest fromFeb 3, 2026 4:13 PM
But just to lay more clarity about the frictional force guys, it is also defined as a force that opposes motion when the surface of a body comes in contact with that of another body. The ball experienced both the static and kinetic friction.
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Tavia fromFeb 3, 2026 4:14 PM
Yess that is the most appropriate explanation as required by the task assigned
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Judith fromFeb 3, 2026 4:13 PM
Kinetic energy can also be defined as the energy something has because it's moving
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Lauren fromFeb 3, 2026 4:17 PM
Yess that's right because that is the type of energy possessed by a body when moving but suppose this ball was not moving after reaching the five meters what type of energy would it really possess
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Angel fromFeb 3, 2026 4:18 PM
Then that will be potential energy.
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Judith fromFeb 3, 2026 4:22 PM
Yes it's potential energy isn't it
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Judith fromFeb 3, 2026 4:21 PM
Guys can we discuss more on the applied forces of friction to make it more ellaborative
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Judith fromFeb 3, 2026 4:15 PM
For example
A rolling ball has kinetic energy.
A running person has kinetic energy
A flying bird has kinetic energy
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Lauren fromFeb 3, 2026 4:19 PM
Perfect
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Lauren fromFeb 3, 2026 4:19 PM
Perfect
G
Guest fromFeb 3, 2026 4:22 PM
But why did the ball finally stop after five meters
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Angel fromFeb 3, 2026 4:24 PM
This is because when the ball started rolling, the kinetic friction started reducing the kinetic energy from the rolling ball slowing it down. And after the five meters, the ball had no kinetic energy left and stopped possessing potential energy
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Judith fromFeb 3, 2026 4:31 PM
When a ball stops after 5 minutes it no longer has kinetic energy because,
While the ball was moving it had kinetic energy due to motion.
As it rolled forces like friction with the ground and air resistance slowed it down
These forces caused the ball's kinetic energy to be converted into other forms
Once the ball finally stops kinetic energy becomes zero
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Lauren fromFeb 3, 2026 4:27 PM
Correct submission according to me. Angel is right
J
Judith fromFeb 3, 2026 4:33 PM
I think we HV all got that now
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John from St. John's SSSFeb 4, 2026 9:10 AM
Kinetic friction is the frictional force that opposes the relative motion of two objects in contact, arising from the rubbing surfaces. When the ball started rolling, the kitchen netic friction started reducing the energy from the rolling ball slowing it down.After five meters, the ball had no energy left and stopped.
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Lukwago from Light high school segukuFeb 4, 2026 9:45 AM
I get it now thank you team
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EDNUS from KASESE secondary schoolFeb 7, 2026 9:42 AM
This holiday season we have not learn anything new
Static friction
Kinetic friction
Including other force i.e.
Applied force and gravity force
For the applied force,
The hand the boy exerts an applied force on the ball which changes the state of rest of the ball to the state of motion.
2. Friction,
Static friction is a force that keeps an object at rest. The static friction provided the grip between the ball and the boy's hand and the ball and the ground. The grip enabled the push force from the boy's hand create the rolling effect on the ball. The static friction acted on the ball again when it stopped at Five meters.
Kinetic friction is the frictional force that opposes the relative motion of two objects in contact, arising from the rubbing surfaces. When the ball started rolling, the kitchen netic friction started reducing the energy from the rolling ball slowing it down.After five meters, the ball had no energy left and stopped.
This is a fundamental force of attraction that exists between any two objects with mass.
Gravity between the earth and the ball is responsible for keeping the ball on the ground as it rolls.
That is the role of the above forces
This is a fundamental force of attraction that exists between any two objects with mass.
Gravity between the earth and the ball is responsible for keeping the ball on the ground as it rolls.
That is the role of the above forces
The contact forces are:
1. Applied force
An applied force is the force that is exerted by an object on one or more other objects.
The hand the boy exerts an applied force on the ball which changes the state of rest of the ball to the state of motion
The answer is yes and it is under the contact forces but not the non contact
Normal force is the force that surfaces exert to prevent solid objects from passing through each other.
The normal force between the surface of the ball and the surface of the ground was strong enough to prevent the ball from either losing its all round shape or sinking into the ground. This enabled the ball to roll.
A rolling ball has kinetic energy.
A running person has kinetic energy
A flying bird has kinetic energy
While the ball was moving it had kinetic energy due to motion.
As it rolled forces like friction with the ground and air resistance slowed it down
These forces caused the ball's kinetic energy to be converted into other forms
Once the ball finally stops kinetic energy becomes zero