During your tennis serve, your racket and arm move in an approximately rigid arc with the top of the racket 1. 5 m from your shoulder joint. The top accelerates from rest to a speed of 20 m/s in a time interval of 0. 10 s.

Which of the following best describes the difference between “autobiography” and “memoir”? a. autobiography is written about the author's own interpretation of events; memoir is a written interpretation of events. b. memoir covers a particular time in the writer’s life or recounts life events around one or two themes; autobiography covers the entire story of the author's life and has multiple themes. c. autobiography covers the entire story of the writer's life and has multiple themes; memoir is a shorter written work with one theme. d. autobiography covers entire story of the writer's life and has multiple themes; memoir is the writer’s random memories about past experiences.

The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.

Of the population of the united states is obese. a. 10% b. 25% c. 33% d. 50% select the best answer from the choices provided. a b c d