A bus is traveling North at a rate of 20 m/s. A student stands up and walks toward the front of the bus (North) at a rate of 2 m/s. What is the resultant velocity of the student?
A. 10 m/s north
B. 18 m/s south
C. 22 m/s north
D. 40 m/s north
pls explain too bc i don’t get it

Isla’s change in velocity is 30 m/s, and hazel has the same change in velocity. which best explains why they would have different accelerations? isla had negative acceleration, and hazel had positive. isla had a different time than hazel. isla had positive acceleration, and hazel had negative. isla went a farther distance than hazel.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm