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never [62]
3 years ago
13

Which of the following is the correct SI unit to use in measuring amount of material contained in a solid sphere? A) kilograms B

) ounces C)pounds D)tons
Physics
1 answer:
gogolik [260]3 years ago
7 0

Answer: A) kilograms

Explanation:

The amount of matter in a body is defined as mass, which is a physical quantity that expresses the measure of inertia of a body, determined by the acceleration produced when a force acts on it.

The unit of mass in the International System of Units (SI) is the <u><em>kilogram</em></u>, which was defined for many years from a standard object (the international prototype of the kilogram located at the International Office of Weights and Measures). However, since of May 20, 2019, its definition became linked to Planck's constant

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Acceleration = (change in speed) / (time for the change)

change in speed = (speed at the end) - (speed at the beginning)

change in speed = (37 km/hr) - (89 km/hr) = -52 km/hr

Acceleration = (-52 km/hr) / (6 sec)

Acceleration = (-26/3) km/(hr·sec)

Units: (1/hr·sec) · (hr/3600 sec) = 1 / 3600 sec²

(-26/3) km/(hr·sec) = (-26/3) km/(3600 sec²)

= -26,000/(3 · 3600) m/s²

<em>Acceleration = -2.41 m/s²</em>

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