A race car travels around the track shown at a constant speed. At which point will the race car have the largest acceleration?

Match the following to True/False. A. GPS devices are an example of mobile traffic sensors For the time-space diagram of a single-lane one-way road, the vehicle trajectories do not intersect with each other unless there is a crash. Pneumatic tubes detect vehicle presence by sending an electric signal to a roadside device. B. Space mean speed may be greater than time mean speed in certain situations. A. True B. False

As a car comes around a bend onto a straight road moving at 80 km/hr the driver suddenly notices another slower car ahead, a distance d = 50 m ahead, moving at 30 km/hr. At this moment, in order to avoid hitting the slow-moving car ahead the driver slows down but takes .25 seconds to react relative to first noticing the car 50 m ahead. Assuming the car decelerates at a constant rate, above what minimum magnitude of the deceleration avoids a rear-end collision? can you solve this with a detailed explanation

A motorcyclist drives at 21 m/s in a direction 46° east of north relative to a car, and at 9.5 m/s due north relative to the Earth. What is the magnitude of the car's velocity relative to Earth, VC relative to E? What is the direction of the car's velocity relative to Earth, measured as an angle counterclockwise from due east? VC relative to E = 0 = m/s