Ch 03: 2D Motion (Projectile Motion)WorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Solution: A dog running in an open field has components of velocity V x exttip{v_{mit x}}{v_x}= 2.7 m/s and Vy exttip{v_{mit y}}{v_y}= -1.4 m/s at time t1exttip{t_{ m 1}}{t_1} = 11.1 s . For the time interval f

Problem

A dog running in an open field has components of velocity V x = 2.7 m/s and Vy = -1.4 m/s at time t1 = 11.1 s . For the time interval from t 1 = 11.1 s to t 2 = 23.1 s, the average acceleration of the dog has magnitude 0.51 m/s2 and direction 31.0° measured from the +x-axis toward the +y-axis.
(a) At time t 2 = 23.1 s, what is the x-component of the dogs velocity?
(b) At time t 2 = 23.1 s , what is the y-component of the dogs velocity?
(c) What is the magnitude of the dogs velocity?
(d) What is the direction of the dogs velocity (measured from the +x- axis toward the +y-axis)?