an alien spaceship is 500m above the ground and moving at a constant velocity of 150 m\s upwards. how high above the ground is the spaceship after 5 seconds?

Taylor's experiment: 1. accurately measured the speed of light 2. locked together the phases of two light sources so that the interference pattern would not shift 3. showed that man's reaction time was much slower than the speed of light 4. showed that individual photons have wave characteristics

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?