Momentum, p = mv = 4 x 4 = 16 kg-m/s

We know that, Momentum = mass X velocity P = mv = kg-m/s Or = kg-ms⁻₁ So, SI unit of momentum is kg-m/s.

Balanced forces cause a change in shape of object without change in its state of motion.

In plant cells, in addition to the plasma membrane, another rigid outer covering is present called cell wall. It lies outside the cell membrane.

The cell theory was proposed by Schleiden and Schwann in 1839, postulating that all living beings are composed of cells and their products. In 1855, Rudolf Virchow modified the cell theory with his postulate, “Omnis cellula-e-cellula”, which means, a new ...