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
1. If you push for an hour against a stationary wall‚ you do no work A) on the wall. B) at all. C) both of these D) none of these 1. If you push an object twice as far while applying the same force you do E) twice as much work. F) four times as much work. G) the same amount of work. 2. If you push an object just as far while applying twice the force you do H) twice as much work. I) four times as much
Premium Potential energy Energy Force
with a velocity of 1m/s. find the mass of the bullet? · Certain force acting on a mass of 15kg for 3s‚ gives it a velocity of 2m/s. Find the magnitude of force. · A cricket ball of mass 0.15 kg is moving with a velocity of 1.2m/s . Find the impulse on the ball and average force applied by the player if he is able to stop the ball in 0.18s. · A motor car of mass 200kg is moving with a certain velocity . It is brought to rest by the application of brakes‚ within a distance o f 20m when the
Premium Mass Classical mechanics Poverty
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If you push for an hour against a stationary wall‚ you do no work A) on the wall. B) at all. C) both of these D) none of these 2) If you push an object twice as far while applying the same force you do A) twice as much work. B) four times as much work. C) the same amount of work. 3) If you push an object just as far while applying twice the force you do A) twice as much
Premium Kinetic energy Potential energy Energy
methods for differential equations. APPLIED MECHANICS AND DESIGN Engineering Mechanics: Free body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and of rigid bodies in plane motion‚ including impulse and momentum (linear and angular) and energy formulations; impact. Strength of Materials: Stress and strain‚ stress-strain relationship and elastic constants‚ Mohr’s circle for plane stress and plane strain‚ thin cylinders; shear force and bending moment
Premium Fluid dynamics Heat transfer Fluid mechanics
surface a puck of mass m initially at speed u collides head-on (without rotation) with a stationary puck of mass M. Find the velocities of both puck after the collision if: i) the collision is fully elastic ii) the collision if fully inelastic. i) momentum: kinetic energy: mu = mv+MV (+ve in direction of initial u) 1 /2 m u2 = 1/2 m v2 + 1/2 M V2 2 eqns in 2 unknowns: V = (u - v) m/M substitute in K eqn: u2 = v2 + (M/m) V2 = v2 + (M/m) (u - v)2 (m/M)2 = v2 + (u - v)2 (m/M) let ρ = (m/M) ⇒ v2 (1
Premium Mass Kinetic energy Classical mechanics