An agricultural utility vehicle has a total weight of $$\begin{gathered} 4800 \\ textN \end{gathered}$$. It has four wheels, each of which has an area of $$\begin{gathered} 40 \\ text{cm}^2 \end{gathered}$$ in contact with the ground. Calculate the pressure of the vehicle on the ground.

Answer = ____________________ \text{N/cm}^2

Safety harnesses used in climbing are made of wide straps that stretch slightly during a fall.

Explain why it is important that the harness straps are wide.

Explain why it is important that the harness material is stretchy.

Children's climbing harnesses are designed with narrower straps than those used for adults.

Explain why it is safe for children's harnesses to be narrower than adult harnesses.