David Sang Solutions for Chapter: Energy Transformations and Energy Transfer, Exercise 6: Questions

The object's g.p.e. increasing, decreasing or remaining constant$?$ An aircraft flies horizontally at a height of $9000 \mathrm{m}$. with example.

The object's g.p.e. increasing, decreasing or remaining constant$?$ A sky-rocket is fired into the sky. With example.

A girl of weight $500 \mathrm{N}$ climbs on top of a $2.0 \mathrm{m}$ high wall. By how much does her g.p.e. increase$?$

A stone weight $1.0 \mathrm{N}$ falls downwards. its g.p.e decreases by $100 \mathrm{J}$. How far has it fallen$?$

What does $\mathrm{v}$ represent in the formula $\mathrm{k}.\mathrm{e}.=\frac{1}{2}{\mathrm{mv}}^2?$

How much $\mathrm{k}.\mathrm{e}.$ is stored by a $1.0 \mathrm{kg}$ ball moving at $1.0 \mathrm{m}/\mathrm{s}?$

A runner of mass $80 \mathrm{kg}$ is moving at $8.0 \mathrm{m}/\mathrm{s}$. Calculate her kinetic energy.

Which has more $\mathrm{k}.\mathrm{e}.$, a $20 \mathrm{g}$ bee flying at $1.0 \mathrm{m}/\mathrm{s}$, or a $1.0 \mathrm{g}$ wasp flying at $2.0 \mathrm{m}/\mathrm{s}?$