1. A moving plane drop of a package at a speed of 30 m/s. What is the vertical velocity of the package after 30seconds?
2. From a tall building, a girl throws a piece of paper at a velocity of 15m/s. What is the
horizontal velocity of the paper after 8 seconds?
3. At what time will a ball thrown horizontally reach its velocity at 22.2 m/s downwards?
4. A stone is thrown at a speed of 12m/s. What is the horizontal velocity after 10 seconds?
5. A stone is thrown at a speed of 18m/s. What is the vertical velocity after 8 seconds?

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

What are two different ways you could find the value of a? explain these methods.