ps.instructu Below is a graph of a bus's journey through town. Which of the following answer choices BEST represents where the bus is decelerating? B. O point O - A O point A - B O point B - C O point O - F 直 dy

At 10:17 a.m., you pass a police car at 55 mph that is stopped on the freeway. You pass a second police car at 55 mph at 10:53 a.m., which is located 39 mi from the first police car. If the speed limit is 60 mph, can the police cite you for speeding? а. a. The total time between your two police car sightings was P hours. b. Your average speed between the two police car sightings was 8, mph. c. Can the police cite you for speeding? No, your average speed was less than the speed limit. CYes, since your average speed was more than the speed limit, there must have been somewhere within the 39 mi where you were driving more than 60 mph.

ř=(−b₁t³+b₂t)i+c₁t²_c₂t+c₂) j Assume that b₁,b2, C₁, C2, and C3 are positive constants. Which of the following statements must be true? a. The acceleration vector is constant. b. As time passes, the object's acceleration vector is directed in the 2nd quadrant. C. The object is initially at the origin. d. The object's initial velocity is directed in the 4th quadrant. e. V changes sign at the time t=b₂/b₁. X 2

A car goes at 60 mph for 2 hours from point O and then it takes 3 hours to get back to point O. a) Find the average velocity for the entire trip. b) Find the average velocity for the first 3 hours. c) Find the average speed for the whole trip.

A small rock is thrown vertically upward with a speed of 29.0 m/s from the edge of the roof of a 33.0 m tall building. The rock doesn't hit the building on its way back down and lands in the street below. Ignore air resistance. A) Whats the speed of the rock just before it hits the street B) How much time elapses from when the rock is thrown until it hits the street

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