A ship A which is at distance of 30km to the north of P moves at 15 km/hr and another ship B which is at a distance of 40 km to the east of P moves at 20 km/hr. How fast the distance between the cars changing?

A road running north to south acrosses a road going east to west at the point P. Car A is driving north along the first road, and car B is driving east along the second road . At a particular time car A 10 kilometers to the north of P and traveling at 80 km//hr , while car B is 15 Kilometers to the east of P and traveling at 100 km//hr . How fast is the distance between the two cars changing ?

A car covers a distance of 80 km at a speed of 60 km/hr and another 140 km at a speed of 70 km/hr. What is the average speed of the journey ?

At a particular instant ship A is 100 km west of ship B, ship A is sailing at a speed of 35 km/hr and ship B is sailing north at 25 km/hr. How fast is the distance between the ships changes after 4 hours

A car covers the first half of the distance between two places at 40 km/hr and another half at 60 km/hr. The average speed of the car is

Two trains leave a railway station at the same time. The first train travels due west and the second train due north . The first train travels at a speed of 20 km/ hr and the second train travels at 30 km/ hr. After 2 hours, what is the distance between them ?

A police jeep, approaching an orthogonal intersection from the northern direction, is chasing a speeding car that has turned and moving straight east. When the jeep is 0.6 km north of the intersection and the car is 0.8 km to the east. The police deteremine with a radar that the distance between them and the cae is increasing at 20 km/hr. If the jeep is moving at 60 km/hr at the instant of measurement, what is the speed of the car?