Um móvel é atirado verticalmente para cima, a partir do solo, com velocidade inicial de 50 m/s. Despreze a resistência do ar e adote g = 10
m/s2. Determine o tempo de subida

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m

Which component of the earth’s atmosphere is decreased due to photosynthesis?