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maximum theoretical efficiency =. input power = calorific value × fuel flow rate. indicated power = ( × ( − ) = output or brake power. friction power =. heat pumps and refrigerators –. refrigerator: =. hp =.
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HT pressure due to a column of liquid = height of column × density of liquid × gravitational field strength p=h ρg. distance travelled = speed × times=v t. acceleration = change in velocity time taken. a = Δv t. (final velocity)2– (initial velocity)2= 2 × acceleration × distancev2–u2= 2a s. resultant force = mass × accelerationF=m a.
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Revision notes on 9.2.1 Resistance for the CIE A Level Physics syllabus, written by the Physics experts at Save My Exams.
For the vertical system, kinetic energy is converted to both elastic and gravitational potential energy, whereas for the horizontal system, kinetic energy is converted only to elastic potential energy. For either of these types of system you can use the following formula: = 2π √.
- Constant Acceleration
- Velocity-Time
- Position-Time
- Velocity-Position
- Calculus Derivations
For the sake of accuracy, this section should be entitled "One dimensional equations of motion for constant acceleration". Given that such a title would be a stylistic nightmare, let me begin this section with the following qualification. These equations of motion are valid only when acceleration is constant and motion is constrained to a straight ...
The relation between velocity and time is a simple one during uniformly accelerated, straight-line motion. The longer the acceleration, the greater the change in velocity. Change in velocity is directly proportional to time when acceleration is constant. If velocity increases by a certain amount in a certain time, it should increase by twice that a...
The displacement of a moving object is directly proportional to both velocity and time. Move faster. Go farther. Move longer (as in longer time). Go farther. Acceleration compounds this simple situation since velocity is now also directly proportional to time. Try saying this in words and it sounds ridiculous. "Displacement is directly proportional...
The first two equations of motion each describe one kinematic variable as a function of time. In essence… 1. Velocity is directly proportional to time when acceleration is constant (v ∝ t). 2. Displacement is proportional to time squared when acceleration is constant (∆s ∝ t2). Combining these two statements gives rise to a third — one that is inde...
Calculus is an advanced math topic, but it makes deriving two of the three equations of motion much simpler. By definition, acceleration is the first derivative of velocity with respect to time. Take the operation in that definition and reverse it. Instead of differentiating velocity to find acceleration, integrate acceleration to find velocity. Th...
Mar 12, 2024 · Define net force, external force, and system. Understand Newton’s second law of motion. Apply Newton’s second law to determine the weight of an object.
Definition and Types of Forces. A force is any influence that changes the motion of a body, either from its state of rest or motion. There are two main classifications of forces - contact forces and non-contact forces. Contact forces require physical interaction between objects.
