Elastic and Inelastic Collisions

AP Physics 1· difficulty 3/5

The same 0.10 kg0.10~\text{kg} ball at 20 m/s20~\text{m/s} now embeds into a soft pad and stops (no rebound). Compared to the previous problem (rebound at 15 m/s15~\text{m/s}), the magnitude of impulse from the pad is

  • A

    Same

  • B

    Smaller

    check_circle
  • C

    Cannot be determined

  • D

    Larger

Explanation

Stopping (no rebound): J=mv=2.0 N⋅s|J| = m v = 2.0~\text{N·s}. Less than the rebound case (3.5 N⋅s3.5~\text{N·s}).

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