Question

If a moving object cuts its speed by half, the change in momentum would be

Answer 1

initial momentum=mv

final momentum=m×v/2

change in momentum = initial-final

= mv-mv/2

=2mv/2-mv/2

=2mv-mv/2

=mv/2

Therefore the momentum will be half.

Answer 2

initial momentum=mv

final momentum=m×v/2

change in momentum = initial-final

= mv-mv/2

=2mv/2-mv/2

=2mv-mv/2

=mv/2

Therefore the momentum will be half.