4.3 You are driving in one direction on a long straight road. You drive in the positive direction at 126 km/h for 30.0 minutes, at which time you see a police car with someone pulled over, presumably for speeding. You then drive in the same direction at 100 km/h for 45.0 minutes. (a) How far did you drive? (b) What was your average velocity in kilometers per hour? (a) km (b) km/h 4.4 You made a journey, and your displacement was +95.0 km. Your initial velocity was 167 km/h and your final velocity was -26.0 kmh. The journey took 43.0 minutes. What was your average veiocity in kilometers per hour? km/h

A car drives around a circular track of diameter 199 m at a constant speed of 35.6 m/s. During the time it takes the car to travel 168 degrees around, what is the magnitude of the car s average acceleration?

A rock is held steady over a well and dropped. 4.9 seconds later, the sound of the rock hitting water is heard. Sound travels at a constant speed of 337 m/s. How deep is the well?

A rocket is shot straight up in the air from the ground at a rate of 46 feet per second. The rocket is tracked by a rangefinder that is 427 feet from the launch pad. Let d represent the distance from the rocket to the rangefinder and t represent the time, in seconds, since "blastoff". Express d as a function of t.

The initial velocity of a car is 35 m/s due North.  Its final velocity is 42 m/s at 15 degrees South of East.  If this takes 30 seconds, what is the magnitude and direction of the car's average acceleration?

A rocket is fired from the ground at some angle and travels in a straight path. When the rocket has traveled 465 yards it is 315 yards above the ground. At what angle (in degrees) was the rocket fired?

A rocket testing center is conducting tests on a new rocket. The test engineer sets up the rocket horizontally on a cart that runs along a straight track with very little friction. She set up a timer and a radar speed gun at the end of the track. She assumed that the rocket accelerated at constant acceleration. Once the rocket reached the end of the track, the timer reported 11.0 seconds and speed gun reported 100 m/s. How long was the test track?

A car drives around a circular track of diameter 140 m at a constant speed of 33.3 m/s. During the time it takes the car to travel 207 degrees around, what is the magnitude of the car s average acceleration?

Jackie Chan jumps from the top of one building to the top of another building 6.61 m away. After a running start,he leaps at a velocity of 4.0 m/s at an angle of 18.2° with respect to the flat roof.  What is the maximum difference in height that the second building must be in order for Jackie to make it across safely? (Make it positive.)

A pilot flew his​ single-engine airplane 60 miles with the wind from City A to above City B. He then turned around and flew back to City A against the wind. If the wind was a constant 20 miles per​ hour, and the total time going and returning was 1.3 ​hours, find the speed of the plane in still air.