The energy possessed by an object in motion is known as kinetic energy. The mathematical expression for calculating this is KE = 1/2mv², where 'm' stands for the object's mass and 'v' represents its velocity. The standard unit for measuring kinetic energy is the joule (J). This is a core principle in the study of physics and is applicable in a range of different disciplines.
| Topic | Problem | Solution |
|---|---|---|
| None | A $25 \mathrm{~mm}$ diameter glass marble with a … | We are given a glass marble of diameter 25 mm and mass 17 g that rolls without slipping down a trac… |
| None | A person drops a cylindrical steel bar $\left(Y=1… | The potential energy of the bar before it hits the floor is given by \(mgh\), where \(m\) is the ma… |
| None | A $21 \mathrm{~mm}$ diameter glass marble with a … | First, we need to understand that the marble needs to have enough kinetic energy at the top of the … |
| None | on 2 of 14 on An empty cylindrical barrel is open… | The barrel is rolling down the hill without slipping, so we can use the principle of conservation o… |
| None | on On of your summer lunar space camp activities … | The gravitational potential energy is given by the formula: \(U = - \frac{GMm}{r}\) where G is the … |
| None | A ball-launching machine can deliver $65.0 \mathr… | The power delivered by the machine is given as \(65.0 \mathrm{~W}\). |
| None | 321 point Watching a video of a bungee jumper, yo… | Calculate the initial kinetic energy (KE) using the formula: \(KE = 0.5 * m * v^2\), where m is the… |
| None | 11. [1 mark] The tension in a horizontal spring i… | Given the energy stored in the spring at extension $x$ is $E$, we can use the formula for the poten… |
| None | 17)Group A measures the speed of a $0.1 \mathrm{~… | Calculate the kinetic energy using the formula KE = 0.5 * m * v^2, where m is the mass of the car (… |
| None | Problem 02. X-rays for human applications can be … | Calculate the energy of the n=1 and n=2 orbitals for Tungsten using the formula: \(E_n = -\frac{Z^2… |