A roller coaster, traveling with an initial speed of 21 m/s decelerates uniformly at 3.5 m/s to a full stop. How far does the roller coaster travel during its deceleration?

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Explain vector addition, triangle method and parallelogram method

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.