In this part, you move the pendulum arm out of the way and you shoot the ball horizontally several times from a desktop. You mark the places on the floor that it hits but using a sheet of carbon paper on top of white paper on the floor. The carbon paper leaves a small black spot on the white paper every time the ball hits. Use the average position of a cluster of points (usually accurate within +/- 3cm or better). A. Derive the equation for the initial velocity vo of the ball in terms of X (total displacement in horizontal direction), Y (total drop in height) and g. (use kinematics) VO =
B. You measure the distance the ball drops to be Y=97.8 cm (+/- 0.2 cm) Here you have already taken into account the size of the ball, so it's the amount the center of mass drops. You measure X to be 220 cm (+/- 2 cm). Calculate the initial velocity of the ball using the equation above. Vo = cm/s
C. The independent values of vo in parts 1 and 2 should be similar. Take the average here and use this for the rest of the lab for the value of vo. Fill in the +/- to span the range of your 2 value of vo. Average ve +/- cm/s

American eels (anguilla rostrata) are freshwater fish with long, slender bodies that we can treat as uniform cylinders 1.0 m long and 10 cm in diameter. an eel compensates for its small jaw and teeth by holding onto prey with its mouth and then rapidly spinning its body around its long axis to tear off a piece of flesh. eels have been recorded to spin at up to 14 revolutions per second when feeding in this way. although this feeding method is costly in terms of energy, it allows the eel to feed on larger prey than it otherwise could. 1.a field researcher uses the slow-motion feature on her phones camera to shoot a video of an eel spinning at its maximum rate. the camera records at 120 frames per second. through what angle does the eel rotate from one frame to the next? 2. the eel is observed to spin at 14 spins per second clockwise, and 10 seconds later it is observed to spin at 8 spins per second counterclockwise. what is the magnitude of the eels average angular acceleration during this time? 3. the eel has a certain amount of rotational kinetic energy when spinning at 14 spins per second. if it swam in a straight line instead, about how fast would the eel have to swim to have the same amount of kinetic energy as when it is spinning? 4.a new species of eel is found to have the same mass but one-quarter the length and twice the diameter of the american eel. how does its moment of inertia for spinning around its long axis compare to that of the american eel?

What properties of a moving object are used in determining the object's energy of motion

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant