# Velocity

## 012 Resultant of two velocity vectors

**Problem 012**

Find the resultant vector of vectors **A** and **B** shown in Fig. P-012.

- Read more about 012 Resultant of two velocity vectors
- Log in or register to post comments
- 31231 reads

## 37-38 How fast a ship leaving from its starting point

- Read more about 37-38 How fast a ship leaving from its starting point
- Log in or register to post comments
- 11813 reads

## 33-34 Time Rates: A car traveling east and airplane traveling north

**Problem 33**

From a car traveling east at 40 miles per hour, an airplane traveling horizontally north at 100 miles per hour is visible 1 mile east, 2 miles south, and 2 miles up. Find when this two will be nearest together.

- Read more about 33-34 Time Rates: A car traveling east and airplane traveling north
- Log in or register to post comments
- 8714 reads

## 30 - Two trains in perpendicular railroad tracks

**Problem 30**

Two railroad tracks intersect at right angles, at noon there is a train on each track approaching the crossing at 40 mi/hr, one being 100 mi, the other 200 mi distant. Find (a) when they will be nearest together, and (b) what will be their minimum distance apart.

- Read more about 30 - Two trains in perpendicular railroad tracks
- Log in or register to post comments
- 9470 reads

## 22-24 One car from a city starts north, another car from nearby city starts east

**Problem 22**

One city C, is 30 miles north and 35 miles east from another city, D. At noon, a car starts north from C at 40 miles per hour, at 12:10 PM, another car starts east from D at 60 miles per hour. Find when the cars will be nearest together.

- Read more about 22-24 One car from a city starts north, another car from nearby city starts east
- Log in or register to post comments
- 13196 reads

## 19-21 Two cars driving in parallel roads

**Problem 19**

One city A, is 30 mi north and 55 mi east of another city, B. At noon, a car starts west from A at 40 mi/hr, at 12:10 PM, another car starts east from B at 60 mi/hr. Find, in two ways, when the cars will be nearest together.

- Read more about 19-21 Two cars driving in parallel roads
- Log in or register to post comments
- 13734 reads

## 11-12 Two trains; one going to east, and the other is heading north

**Problem 11**

A train starting at noon, travels north at 40 miles per hour. Another train starting from the same point at 2 PM travels east at 50 miles per hour. Find, to the nearest mile per hour, how fast the two trains are separating at 3 PM.

- Read more about 11-12 Two trains; one going to east, and the other is heading north
- Log in or register to post comments
- 24491 reads

## Time Rates | Applications

**Time Rates**

If a quantity x is a function of time t, the time rate of change of x is given by dx/dt.

When two or more quantities, all functions of t, are related by an equation, the relation between their rates of change may be obtained by differentiating both sides of the equation with respect to t.

- Read more about Time Rates | Applications
- Log in or register to post comments
- 112131 reads