The length of the spring in a toy pistol is 250 mm.
A force of 7 N used to compress the spring until its range becomes 40 mm.
Calculate the maximum speed of the plastic ball of mass 40 g when it fired from the pistol.
In oscillating systems such as the oscillation of simple pendulum and the oscillation of a loaded spring always experience the different transformation of energy.
Which of the following form of energy is not experienced by the system?
A 300 g ball is thrown vertically upward at 21 \(\text{ms}^{-1}\).
Calculate the maximum gravitational potential energy.
Diagram shows a kid riding down a slide.
Which of the following is the correct energy changes?
The total amount of energy transfer from one form to another form in the close system is always equal.
True or false?
There is something wrong with this question.
