An overhead door is guided by wheels at a and b that roll in horizontal and vertical tracks. when θ = 40°, the velocity of wheel b is 1.8 ft/s upward. determine the angular velocity of the door and the velocity of end d of the door.

I think the situation is modeled by the scenario in the attached image. Some specific values seem to be missing (like the height of door )...

The door forms a right triangles that satisfies

We also have

so if you happen to know the height of the door, you can solve for and .

is fixed, so

We can solve for the angular velocity :

At the point when and ft/s, we get

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer

in order to follow the instructions and complete the statements, i need to use data from table c of your student guide. can you think of a way to let me see your student guide for a while ? i can't answer the question without the data in table c.