A Hockey Puck Slides Off the Edge of a Horizontal

question 152

Multiple Choice

A hockey puck slides off the edge of a horizontal platform with an initial velocity of 28.0 m/shorizontally in a city where the free-fall acceleration is 9.81 m/s².The height of the platform above the ground is 2.00 m.What is the angle below the horizontal of the velocity of the puck just before it hits the ground if you ignore the effects of air?

• A)77.2°
• B)72.6°
• C)12.8°
• D)12.6°
• E)31.8°

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Definitions:

X

A commonly used variable or symbol to represent an unknown value in mathematics and algebra.

Cubic Polynomial

A polynomial of degree three, expressed in the form ax^3 + bx^2 + cx + d.

Quadratic Polynomial

A polynomial of degree 2, typically in the form of ax^2 + bx + c.

Scientific Notation

A way of expressing numbers that are too big or too small to be conveniently written in decimal form, using powers of ten.