a cloud droplet 2 km above the earth is falling at a constant speed of 3 cm/sec. how long will it take to reach the ground?
a cloud droplet 2 km above the earth is falling at a constant speed of 3...
A car travels due east with a speed of 55.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 75.0° with the vertical. Find the velocity of the rain with respect to the following reference frames. (a) the car km/h (b) the Earth km/h
Q1: A 1 036-kg satellite orbits the Earth at a constant altitude of 93-km. (a) How much energy must be added to the system to move the satellite into a circular orbit with altitude 203 km? MJ (b) What is the change in the system's kinetic energy? MJ (c) What is the change in the system's potential energy? MJ Q2: A 475 kg satellite is in a circular orbit at an altitude of 575 km above the Earth's surface. Because...
A car travels due east with a horizontal speed of 51.8 km/h. Rain is falling vertically with respect to Earth. The traces of the rain on the side windows of the car make an angle of 67.8◦ with the vertical. Find the magnitude of the velocity (km/h) of the falling rain before it hits the car. Hint: The three velocity vectors are (1) the velocity of the car with respect to the ground (horizontal), (2) the velocity of the rain...
A particular airplane will reach liftoff at a speed of 120 km/h. (a) What minimum constant acceleration does the airplane require for it to liftoff after a takeoff run of 220 m? (Enter the magnitude only.) m/s2 (b) How long does it take the airplane to reach liftoff speed? S
The speed of the earth in its orbit is 29.8 km / s. Considering a displacement of the planet small enough to take its speed as a constant, and taking into account that a space rocket is launched perpendicular to it with a speed of 11.2 km / s. Calculate how quickly you will see an astronaut who is in the international space station (which you can consider as still at that moment the ship is moving).
6. Two cars are traveling along a straight road. Car (A) maintains a constant speed of 90.0 km/h; car (B) maintains a constant speed of 101 km/h. Att 0, car (B) is 45.0 km behind car A. How far will car (A) travel from t 0 before it is overtaken by car (B)? km 7. A ball is thrown vertically downward from the edge of a bridge 30.0 m high with an initial speed of 100 m's. The ball all...
The space probe Dawn is currently orbiting Ceres, the largest object in the Asteroid Belt. It is about 517,000,000 km from Earth. How long will it take mes- sages from the Dawn spacecraft to reach Earth? Hints: The speed of light is 300,000 km/sec. and there are 60 seconds in a minute. The space probe Dawn is currently orbiting Ceres, the largest object in the Asteroid Belt. It is about 517,000,000 km from Earth. How long will it take mes-...
please help me thank you! 3. A satellite 300 km above the surface of the Earth emits a radio wave pulse (wavelength = 25.0 m), Calculate the transit time for the wave to reach the surface of the Earth.
6. Two cars are traveling along a straight road. Car (A) maintains a constant speed of 80.0 km/h; car (B) maintains a constant speed of 115 km/h. At t = 0, car (B) is 31.0 km behind car A. How far will car (A) travel from t-0 before it is overtaken by car (B)? km 7. A ball is thrown vertically downward from the edge of a bridge 25.0 m high with an initial speed of 18.0 m/s. The ball...
A spacecraft has position coordinates x Earth-Moon frame, and speed v- 7.2 km/s. 3. 6500 km, y 4700 km relative to the rotating a. Find the value of the Jacobi constant for the spacecraft. b. Does the spacecraft have enou gh energy to escape the Earth-Moon system?