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physics - Coggle Diagram
physics
Forces
Explanation 1:
In case of the ball, we had to hit it
In order to change the velocity, we need to do something
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Circular Part- Have to hit the ball multiple times. Turn round point. Making the ball come to a stop
Cause - Effect Pairs:
- Cause: magnet-Acts On: Ball
- Effect: The ball curved its path.
- Changing its velocity
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In our experiment
- Equal pulls
- Only right side pulls
- Only left side pulls
- Unequal pulls
In each case, the force reading was the same on both sides.
Force was push or pull. It's an interaction between two objects. When the two objects interact, their force is always going to be the same.
Newton's Third Law
For every force, there is always an equal and opposite force. When one object interacts with another object, its force will be the same size but the opposite direction as the other object's force.
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Both Newton Meters will always have the same force reading no matter the situation (even if one side pulls more).
- Floor on foot
- Foot on floor
- Wall on you
- You on wall
- Earth on you
- You on earth
- Feet on floor
- Floor on feet
Name of forces
- Gravitational Force Fg Object on Earth
- Magnetic Force Fm Object and a magnet
- Push Fp Push, the two objects need to be in contact
- Tension Ft When an object is being pulled by a rope or string or chain
- Friction Ff Two objects sliding past each other
- Normal Force Fn Is always at a right angle to a surface (wall, floor)
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Balanced and Unbalanced
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Unbalanced forces cause the object to move in the direction of the force. In this case, the velocity is changing
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Balanced forces - There is an equal amount of force on both sides. The net force is always zero because the forces cancel each other out
Constant velocity
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Ax= 2-1 = 1m
At= 2-0 = 25
Ax= change in position
A= change in delta
= Ax/ At = 0.5m/s
= 1m/25
p.s: A = triangle
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Acceleration
Newton's 1st Law
When an object experiences balanced forces, it's velocity does not change. When an object experience a change in velocity (also known as an acceleration).
Examples:
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Two people of equal strength pulling on a wheelbarrow. At 0 m/s, at rest.
A ball rolling down a mountain
- Unbalanced forces
- Slowing down
A ball rolling and slowing down
If the force is in the opposite direction to the motion, it make it slow down.
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Graphs
Steep = high velocity
t(s) cart that is speeding up
Low velocity
Tangent - its slope tells us the velocity
AV = change in velocity (m/s)
AT= change in time (s)
Slope = AV/ AT = mls/s = m/s2 = m/s/s
Acceleration = change in velocity per unit time, measured m/s/s
p.s: A = triangles
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Momentum
First cart pushed the block
second , heavier cart pushed black father
How far the block goes depends on how hard I pushed the cart and also how heavy the cart is.
If the cart is heavier or if the cart was pushed harder than the block would move farther.
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