Action-reaction And Momentum Conservation Worksheet Answer Key -
| Your answer | Likely error | Fix | |-------------|--------------|-----| | Wrong sign in recoil | Forgot direction | Include negative sign for opposite motion. | | Final speed > initial speeds | Wrong type of collision | In inelastic, final is less than faster initial. | | Momentum not conserved | External force present | Friction? Then not a closed system. | | Mixed up masses | Swapped ( m_1, m_2 ) | Label clearly before solving. |
Always calculate the total momentum of both objects before comparing it to the "after" state. | Your answer | Likely error | Fix
For every action force, there is an equal and opposite reaction force. Then not a closed system
A common worksheet problem involves a "recoil" scenario, such as a rifle firing a bullet: System at Rest : Total initial momentum is Firing Action For every action force, there is an equal
A person walks forward. Identify the action and reaction forces.
| Your answer | Likely error | Fix | |-------------|--------------|-----| | Wrong sign in recoil | Forgot direction | Include negative sign for opposite motion. | | Final speed > initial speeds | Wrong type of collision | In inelastic, final is less than faster initial. | | Momentum not conserved | External force present | Friction? Then not a closed system. | | Mixed up masses | Swapped ( m_1, m_2 ) | Label clearly before solving. |
Always calculate the total momentum of both objects before comparing it to the "after" state.
For every action force, there is an equal and opposite reaction force.
A common worksheet problem involves a "recoil" scenario, such as a rifle firing a bullet: System at Rest : Total initial momentum is Firing Action
A person walks forward. Identify the action and reaction forces.
