You are standing next to your friend, ready to race across a 100 meter field. when the go signal is given, you take 5 seconds to get to your maximum sprinting speed of 12 miles per hour (that's about 5.4 meters per second). what is your acceleration, in meters per second squared? after you cross the finish line, you slow down and come to a stop, breathing hard. it takes you 10 seconds to come to a stop. what is your acceleration?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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)

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?