Question

A marble rolls down a slope at 10m/s and its kinetic energy is 2 joules.

a) Physics experiment
b) Energy conservation analysis
c) Mathematical calculation

Answer 1

Main Answer:

c) Mathematical calculation

Step-by-step explanation:

The given scenario involves the calculation of kinetic energy, which is a form of energy associated with the motion of an object.

The kinetic energy (KE) of an object is given by the formula:
`\( KE = (1)/(2) m v^2 \),` where
`\( m \)` is the mass of the object and
`\( v \)` is its velocity.

In this case, the kinetic energy is given as 2 joules, and the velocity of the marble is given as 10 m/s. The mass of the marble is not provided.

Rearranging the kinetic energy formula to solve for mass:
`\( m = (2 * KE)/(v^2) \)`.

Plugging in the values,
`\( m = (2 * 2)/(10^2) = (4)/(100) = 0.04 \) kg`.

The process involves straightforward mathematical calculations to determine the mass of the marble.

Therefore, the given scenario is best characterized as a mathematical calculation, as it involves the application of a formula to obtain a specific result related to the physical properties of the marble.