Physics
Introductory mechanics, motion, forces, work, energy, and momentum.
20 published problemsPractice Problems
Normal force on an 8.0 kg box resting on a level floor
Kinetic friction for mu_k = 0.25 and F_N = 80 N
Tension needed to lift a 6.0 kg mass upward at 1.5 m/s^2
Work done by a 50 N force over 4.0 m in the same direction
Kinetic energy of a 1000 kg car moving at 20 m/s
Gravitational potential energy of a 3.0 kg book raised 2.0 m
Power when 600 J of work is done in 12 s
Momentum of a 60 kg runner moving at 5.0 m/s
Impulse from a 15 N force applied for 0.40 s
Final velocity when a 2.0 kg cart at 3.0 m/s sticks to a 1.0 kg cart at rest