Necesito ayuda en esto, es urgente! 1- Un tren eléctrico en japón alcanza una velocidad de 50 m/s en 4 segundos. Si el tren experimenta un MRUA...
a) Calcule la aceleración con la que viaja el tren
b) Si la aceleración constante se mantiene por dos segundos más, ¿Cuántos metros recorre el tren en total durante el MRUA?

2- Un vehículo que viaja a 10 m/s comienza a acelerar de manera constante hasta llegar a los 25 m/s en 7 segundos.
a) Calcule la aceleración con la que viaja el auto
b) Si el auto ya llevaba recorridos 15 metros, ¿en que posición se encuentra en el momento que alcanza los 25 m/s de velocidad?

3-Un avión alcanza una velocidad de 60 m/s antes de despegar, recorriendouna distancia de 800 metros de la pista de despegue. Si partió del reposo y se demoró 7 segundos en despegar.
a) Calcular la aceleración constante que experimentó durante el trayecto
b) Calcular la distancia recorrida en el último segundo

3- Un vehículo que viaja a 20 m/s, debe reducir su velocidad a 10 m/s para pasar por un puente. Si realiza la operación en 6 segundos
a) ¿Cuántos metros recorrió en ese tiempo?

1) sections 1, 2, and 10 are significant primarily because they suggest the likelihood that a) widow wycherly is actually the woman in the full-length portrait. b) dr. heidegger wants to include his guests in an experiment with the water. c) dr. heidegger plans to drink some of the water from the vase and needs witnesses. d) the guests will be asked to witness dr. heidegger's transformation when he drinks the water.

Need asap ! what is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? (2 points) as air pressure in an area increases, the density of the gas particles in that area decreases. as air pressure in an area increases, the density of the gas particles in that area increases. as air pressure in an area increases, the density of the gas particles in that area remains constant. as air pressure in an area increases, the density of the gas particles in that area increases and decreases in an alternating pattern. 3. which of the following correctly describes a way in which earth's atmosphere interacts with the geosphere? (2 points) it contains gases that living organisms breathe. it contains gases that trap incoming solar radiation. it provides a medium for cycles that provide nutrients to living organisms. it provides a medium for water to move between earth's surface and the air. 4. which of the following is considered a drawback to using wind energy as a source of power? (2 points) wind energy is nonrenewable. wind energy produces large amounts of air pollution. 5. a meteorologist predicts that the weather in a region will soon change from clear skies to probable thunderstorms. prior to making this prediction, what did the meteorologist most likely observe on a barometer? (2 points) the barometer fell slightly. the barometer fell substantially. the barometer rose slightly. the barometer rose substantially. 6. which of the following do meteorologists not typically use weather balloons to record? (2 points) atmospheric pressure cloud types humidity temperature 7. during which step in the can crush lab did water vapor force air from the can? (2 points) the can was filled nearly to the top with water. the can was placed on the hot stove top burner for several minutes. the can was removed from the hot stove top burner. the can was placed upside-down in the water-filled pan.

What is the magnitude of the resultant vector round your answer to the nearest tenth