HELP PLEASE !! During the filming of a motion picture, a stuntman is driving a motorcycle on top of a train while the train is moving. The train is moving east at 11.3 m/s relative to the ground. If the motorcycle is moving west at 17.3 m/s relative to the train, what is the velocity of the motorcycle relative to the ground? Assume east is positive.

Hint: Use vector addition and draw a picture!

Astronomers discover an exoplanet (a planet of a star other than the sun) that has an orbital period of 3.87 earth years in its circular orbit around its sun, which is a star with a measured mass of 3.59 x 1030 kg. find the radius of the exoplanet's orbit.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm