Near the surface of the earth, a rock is launched straight up. The initial velocity of the rock has a vertical component of 67 m/s. How long will it take the rock to reach the highest point in its path?
O 7 seconds
O 657 seconds
O 57 seconds
O 0 seconds

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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)

Which of the following statement is false