Question

The chart lists the masses and velocities of four objects.

A 3-column table with 4 rows titled Motion of 4 Objects. The first column labeled Object has entries W, X, Y, Z. The second column labeled Mass (kilograms) has entries 58, 34, 89, 60. The third column labeled Velocity (meters per second) has entries 1, 2, 0.5, 2.
Which object requires the greatest change in momentum in order to stop its motion?

W
Z

Answer 1

Momentum = mass × velocity.

W: 58 × 1 = 58 kg·m/s
X: 34 × 2 = 68 kg·m/s
Y: 89 × 0.5 = 44.5 kg·m/s
Z: 60 × 2 = 120 kg·m/s

Z has the largest momentum, so Z.