A car of mass is moving with a velocity of

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car of mass

1000\,\text{kg}

is moving with a velocity of

15\,\text{m/s}

. A scooter has a mass of

125\,\text{kg}

. (i) What velocity must the scooter have so that its momentum equals that of the car? (ii) Subsequently, both vehicles reduce their speeds by

20\%

. Determine the new ratio of the car's momentum to the scooter's momentum after the reduction.