Virtual Physics LabClassical Mechanics

Mechanics Interactive Lab

Explore motion, forces, momentum, and oscillations through interactive experiments.

All 6 Labs Hub →
-6m-4m-2m0m+2m+4m+6mm₁=2.0kg+3.00 m/sp₁ = 6.0m₂=2.0kg0.00 m/s
ApproachingTotal Momentum: 6.00 kg·m/sKE Retained: 100.0%
t = 0.00 s/ 6.0s

Momentum & Energy Conservation Audit

Σp_initial = Σp_final = 6.00 kg·m/s
Before Impact
Cart 1 (p₁)6.00 kg·m/s
Cart 2 (p₂)0.00 kg·m/s
Total Momentum (p_total)6.00 kg·m/s
Total Kinetic Energy (KE)9.00 J
After Impact
Cart 1 (p₁')0.00 kg·m/s
Cart 2 (p₂')6.00 kg·m/s
Total Momentum (p_total')6.00 kg·m/s
Total Kinetic Energy (KE')9.00 J
Kinetic Energy Retained: 100.0%KE Conserved (Elastic)


Cart 1 (Left, Blue)
Mass m₁2.0 kg
Initial Velocity u₁+3.0 m/s
Cart 2 (Right, Orange)
Mass m₂2.0 kg
Initial Velocity u₂0.0 m/s
Momentum & Restitution Equations
Total Momentum Conservation:
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(2)(3) + (2)(0) = 6.0 kg·m/s
Coefficient of Restitution:
e = -(v₂ - v₁) / (u₂ - u₁) = 1.00

Physics Conceptual Challenge

Question 1 of 4

In any closed, isolated physical system, which quantity is ALWAYS conserved during a collision?

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