Thursday

December 18, 2014

December 18, 2014

Posted by **Becca** on Wednesday, February 20, 2013 at 4:23pm.

Which image point has the coordinates (1, 4, 3) after a translation using the vector 1, 2, 3?

2. What point represents a reflection of B over the xy-plane?

B'(?)

3. The vector has a magnitude of 6.1 inches and a direction of 55°. Find the magnitude of its veritcal component. (?) inches

4. Aaron kicked a soccer ball with an initial velocity of 39 feet per second at an angle of 44° with the horizontal.

After 0.9 second, how far has the ball traveled horizontally? (?)ft

After 1.5 seconds, how far has the ball traveled vertically? (?) ft

28. The vector has a magnitude of 5 inches and a direction of 32°. Find the magnitude of its vertical component. ?in.

- Pre-calculus -
**Henry**, Thursday, February 21, 2013 at 8:21pm3. Y = 6.1*sin55.

4. d = 39*cos44 * 0.9

Yo = 39*sin44 = 27.1 Ft/s. = Vertical component of initial velocity.

h = Yo*t + 0.5g*t^2.

h = 27.1*1.5 - 4.9*(1.5)^2

28. Y = 5*sin32

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