# Solving Velocity Problems (Answer: 13.45 km/h, 48.01 degrees or 41.99 degrees) Problem # 5 If a sprinter runs 100 m in 10 seconds, what is his average velocity?(Answer: 10 m/s) Problem # 6 The world record for the men's marathon is .You use it for the derivative operator, and that's so that the D's don't get confused. If someone has a better explanation of that, feel free to comment on this video, and then I'll add another video explaining that better explanation. If I wanted to write an analogous thing for the scalar quantities, I could write that speed, and I'll write out the word so we don't get confused with displacement.

So one, let's just review a little bit about what we know about vectors and scalars. So the velocity of something is its change in position, including the direction of its change in position.

So they're giving us that he was able to travel 5 kilometers to the north. So you could say its displacement, and the letter for displacement is S.

The water is flowing west at 5 km/h, parallel to the shore.

What is the velocity of the sailboat relative to ground, and what is the angle of travel that the sailboat makes with respect to the shore?

Solution Problem # 9 The seals around an engine piston are designed for a maximum velocity of 5 m/s relative to the piston wall.

If the piston oscillates sinusoidally with a stroke length of 20 cm, what is the maximum engine RPM?

If there is a wind blowing at 80 km/h in the direction opposite to take off, what velocity must the plane reach relative to ground in order to take off.

(Answer: 220 km/h) Problem # 8 of the ball relative to the merry-go-round so that, relative to the child, the ball goes around in a perfect circle as he’s sitting on the merry-go-round.

So this is rate, or speed, is equal to the distance that you travel over some time.

So these two, you could call them formulas, or you could call them definitions, although I would think that they're pretty intuitive for you.

## Comments Solving Velocity Problems

• ###### Calculating average velocity or speed video Khan Academy
Reply

Velocity v is a vector quantity that measures displacement or change in. for some pretty common problems you'd, one, see in a physics class, but they're also.…

• ###### BASIC PHYSICS Solving 8 Velocity Problems- Guided.
Reply

In This video lesson of the Basic Physics Series, DrD "The Explainer" explains how to set up and SOLVE 8 velocity problems in a guided.…

• ###### Velocity and Speed Problems with Solutions
Reply

Problems on the the concepts of velocity and speed are presented along with their solutions. velocity for the whole journey? Solution to Problem 1. Problem 2.…

• ###### Physics Homework Questions Examples of Average Velocity.
Reply

For this problem, it's pretty obvious we are going to use the velocity equation. Remember, however, that you are solving for the distance, not the.…

• ###### D Kinematics Describing the Motion of Objects
Reply

Earlier in Lesson 6, four kinematic equations were introduced and discussed. A useful problem-solving strategy was presented for use with these equations and.…

• ###### Speed and velocity questions practice Khan Academy
Reply

However, if you use a hint, this problem won't count towards your progress! Try your best to. Do 10 problems. Calculating average speed and velocity edited.…

• ###### Velocity Equation Part 2 Solving Velocity Problems - YouTube
Reply

How to use the velocity equation, v=D/t to solve simple velocity. This video is a great help for students of Physical Science and beginning.…

• ###### Velocity and Speed Solutions to Problems
Reply

A What is the man's average speed for the whole journey? b What is the man's average velocity for the whole journey? Solution to Problem 1 a.…