ENERGY SYSTEMS Figure 1 shows a sprint cycle race. This activity involves cycling four laps of a 250 metre track‚ with the final lap being completed as fast as possible. Elite performers cover the final lap in times of between 10 and 11 seconds. (a) Name the main energy system being used in the final sprint to the finishing line and explain how this system provides energy for the working muscles. (4 marks) (b) At the end of the race‚ the cyclist will be out of breath and will continue to breathe
Premium Muscle Newton's laws of motion Glycogen
Physics “FORMULAS LIST “ | | | | | | | Quantity |Symbol |Formula | |% Error | |% Error = ( |A-M| ) x 100 /A | |% Uncertainty | |% Uncertainty = (Uncertainty
Premium Force Kinetic energy Classical mechanics
Newton ’s laws of motion Newton ’s laws of motion are three physical laws that form the basis for classical mechanics. They describe the relationship between the forces acting on a body and its motion due to those forces. They have been expressed in several different ways over nearly three centuries and can be summarized as follows: 1. First law: The velocity of a body (a state of rest or of uniform motion in a straight line) remains constant unless the body is compelled to change that state
Premium Classical mechanics Newton's laws of motion Force
and field event similar to the long jump. The only difference between the two is that the hop‚ skip‚ and jump involve a hop and a step‚ whereas the long jump involves just a jump. In the first phase of the triple jump‚ the competitor builds momentum by sprinting down the runway‚ planting their lead foot at the marked board‚ and “hops” into the air‚ cycling one leg around into phase two. After completing the cycle‚ the lead foot strikes the ground again initiating the “skip”‚ where the opposite
Premium Knee Extension Flexion
SECTION II NEWTONIAN MECHANICS - PAGE 9 - Chapter 2: Kinematics Rectilinear Motion Non-linear Motion a. Define displacement‚ speed‚ velocity and acceleration. Distance: Displacement: Speed: Velocity: Total length covered irrespective of the direction of motion. Distance moved in a certain direction Distance travelled per unit time. is defined as the rate of change of displacement‚ or‚ displacement per unit time {NOT: displacement over time‚ nor‚ displacement per second‚ nor‚ rate of change
Free Force Classical mechanics Mass
Chapter 9 Problems 1‚ 2‚ 3 = straightforward‚ intermediate‚ challenging Section 9.1 Linear Momentum and its Conservation 1. A 3.00-kg particle has a velocity of [pic]. (a) Find its x and y components of momentum. (b) Find the magnitude and direction of its momentum. 2. A 0.100-kg ball is thrown straight up into the air with an initial speed of 15.0 m/s. Find the momentum of the ball (a) at its maximum height and (b) halfway up to its maximum height. 3. How fast can you set the Earth
Premium Classical mechanics Kinetic energy Mass
rotated by the force generated in the vanes due to the momentum change or impulse which takes place as the jet strikes the vanes. Water turbines working on this impulse principle have been constructed with outputs of the order of 100‚000 kW and with efficiencies greater than 90%. In this experiment‚ the force generated by a jet of water as it strikes a flat plate‚ conical plate and hemispherical cup may be measured and compared with the momentum flow rate in the jet. 2.0 Experimental Design
Premium Mass Fluid dynamics Mass flow rate
mass 0.01 kg at a speed of 200 m/s. The recoil velocity of the rifle is about 0.001 m/s. 0.1 m/s. 1 m/s ***(answer) 0.01 m/s. none of these You’ve given m1 = 2 kg v1 = ? m2 = 0.01 kg v2 = 200 m/s Set it up as a conservation of momentum problem m1v1 = m2v2 Insert values and solve
Premium Classical mechanics Mass Velocity
e Slide Your Mass Over Learning and Applying the Skill of Using the Triple Beam Balance Section A – Skill Acquisition General Introduction to Skill A balance is generally used for weighing out small amounts of chemicals to use in solutions and determining the mass of different objects in physics in grams. Learning how to use a balance is important for collecting data or information and for ensuring accurate mass measurements. Curriculum Objectives • S2-0-5a Select
Premium Mass
The Pelton wheel is a water impulse turbine. It was invented by Lester Allan Pelton in the 1870s. The Pelton wheel extracts energy from the impulse of moving water‚ as opposed to its weight like traditional overshot water wheel. Although many variations of impulse turbines existed prior to Pelton ’s design‚ they were less efficient than Pelton ’s design; the water leaving these wheels typically still had high speed‚ and carried away much of the energy. Pelton ’s paddle geometry was designed so that
Premium Water turbine Hydroelectricity Fluid dynamics