A45.0 kg skater is skating at a speed of 12.0 m/s. the skater coasts to a speed of 6.00 m/s. how much kinetic energy has the skater lost?

newtons law: kinetic energy: 1/2 mass x velocity squared

3250-810=2430

2430

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed