Ch 02: 1D Motion (Kinematics)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 car starts from rest at a red light at t = 0 and accelerates at 2 m/s  for 10 s, then travels at constant speed for 10 s, accelerates (decelerates) at -1 m/s2 until it reaches zero velocity and stops.  [a] Plot the velocity of the car versus time from t = 0 s until it stops. [b] Find the average acceleration between t = 0 and t = 20 s. [c] Find the displacement of the car from start to stop. [d] Find the average velocity of the car for the entire trip from start to stop.

Solution: A car starts from rest at a red light at t = 0 and accelerates at 2 m/s  2 for 10 s, then travels at constant speed for 10 s, accelerates (decelerates) at -1 m/s2 until it reaches zero velocity and st

Problem

A car starts from rest at a red light at t = 0 and accelerates at 2 m/s  for 10 s, then travels at constant speed for 10 s, accelerates (decelerates) at -1 m/s2 until it reaches zero velocity and stops. 

[a] Plot the velocity of the car versus time from t = 0 s until it stops.

[b] Find the average acceleration between t = 0 and t = 20 s.

[c] Find the displacement of the car from start to stop.

[d] Find the average velocity of the car for the entire trip from start to stop.