A body of mass m=3.513 kg is moving along the X-axis with a speed of 5.00 ms-1. The magnitude of its momentum is recorded as

Momentum, p=mv=3.513×5.00=17.565 kg-ms-1As the number of significant digits in m is 4 and v is 3, so p must have 3 (minimum) significant digits. Hence,p=17.6 kg-ms-1