What is the kinetic energy of a \(5 kg\) mass travelling at \(5 m\,s^{-1}\)?
\[62.5 J\]
\[125 J\]
\[12.5 J\]
What is the mass of a body with \(125 J \)of \({E_K}\) travelling at \(10 m\,s^{-1}\)?
\[12.5 kg\]
\[2.5 kg\]
\[5 kg\]
What is the gain in potential energy of a \(200 kg\) mass, \(1.5 m\) above the ground?
\[2000 J\]
\[300 J\]
\[2940 J\]
At what height is a \(20 kg\) mass when it has gained \(588 J\) of \(E_{p}\) on Earth?
\[1200 m\]
\[30 m\]
\[3 m\]
Assuming no energy losses, how much kinetic energy does a \(5 kg\) mass have when dropped from a \(10 m\) high building?
\[49 J\]
\[490 J\]
\[4900 J\]
What is the speed of a \(5 kg\) mass on reaching the ground when dropped from a \(10m\) high building?
\[14 m\,s^{-1}\]
\[200 m\,s^{-1}\]
\[300 m\,s^{-1}\]
If a \(0.5 kg\) body is propelled directly upwards at \(50 m\,s^{-1}\), what height will it reach?
\[12.8 m\]
\[128 m\]
\[628 m\]