Restricted Collision States

MediumPhysElo Quiz #7

41.Restricted Collision States

+10

Solid block A of mass

1.0\ \text{kg}

is sliding on a frictionless horizontal surface at

6.0\ \text{m/s}

. It collides one-dimensionally with solid block B of mass

2.0\ \text{kg}

, which is initially at rest. During the collision, exactly 50% of the system's initial kinetic energy is dissipated as heat. What is the speed of block B after the collision?

1.0\ \text{m/s}

2.0\ \text{m/s}

3.0\ \text{m/s}

DEither

1.0\ \text{m/s}

3.0\ \text{m/s}

, depending on the internal structure of the blocks

ESuch a collision is impossible because the maximum possible kinetic energy loss is less than 50%

to submit answers

ReportReport Issue

Solved by 4 solves

Daily Attempts

1 attempt per day · Resets at midnight UTC

Rules

📐Express numerical answers in SI units unless stated otherwise.

⌨️Type words like 'mu' or 'pi' to auto-render Greek letters.

➗Use '/' for fractions, '^' for exponents, and 'sqrt' for roots.

🔒Once submitted, answers cannot be changed.

⚡First correct solve earns bonus Quarks.

Discuss

Compare approaches with other solvers.

Open Discussion