Download What you should know - Calderglen High School

Calderglen High
Physics
Forces and Motion 2
What I should know and be able to do
Name ___________________
Class
___________________
1
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What I should know and be able to do
Name
Power
Potential Energy
Kinetic Energy
Work done
Symbol
P
Ep
EK
EW
Unit
W
J
J
J
-Describe the effects of forces in terms of their ability to change the shape
speed and direction of travel of an object.
-State that weight is a force and is the Earth’s pull on the object.
-State that the weight per unit mass is called the gravitational field strength
and has the value of 9.8NKg-1 at the surface of the Earth.
-State that the force of friction can oppose the motion of a body.
-Describe and explain situations in which attempts are made to increase or
decrease the force of friction.
-State what is meant by balanced forces.
-Explain, in terms of the forces required, why seat belts are used in cars.
-Explain the movement of objects in terms of Newton’s first law.
-Describe the qualitative effects of change of mass or of force on the
acceleration of an object.
-Carry out calculations involving the relationship between unbalanced
force, mass and acceleration.
-List scalar and vector quantities.
-Calculate the resultant of two vector quantities.
-State that scalars have magnitude only.
-State that vectors have both magnitude and direction.
-Add two vectors together using a scale diagram, or by calculation.
- State Newton’s 3rd Law is” If A exerts a force on B then B exerts an
equal but opposite force on A”
-State that the force of gravity near the Earths surface gives all objects the
same acceleration and its value is 9.8ms-2.
- Carry out calculations involving the relationship between work done,
force and distance
-Carry out calculations involving the relationship between power, work and
time.
2
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What I should know and be able to do
- State that the change in gravitational potential energy is the work done
against/by gravity.
-Carry out calculations involving the relationship between gravitational
potential energy, mass, gravitational field strength, and height.
- Carry out calculations involving the relationship between kinetic energy,
mass and velocity.
-State that the total amount of energy remains the same during a
transformation.
-Carry out calculations involving the conversion of Ek and Ep
-Explain the curved path of a projectile in terms of force of gravity.
-Explain how projectile motion can be treated as two independent motions
and solve numerical problems using this method
-Explain satellite motion as an extension of projectile motion.
-State that a geostationary satellite takes 24 hours to orbit the Earth and
appears to stay above the same point on the Earth.
Notes:
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