Speed/Velocity

Is distance scalar of vector quantity

Scalar quantity

What is Displacement

It’s vector quantity-Tells us the distance that an object moves in a straight line from the start point to the finish point and must include direction

Is speed/ velocity scalar or vector quantity

Speed is scalar

Velocity is vector

What is typical walking speed

B)running speed

C) cycling speed

Normal walking- 1.5m/s

Running-3m/s

Cycling-6m/s

What factors influence speed of individual

-Age

-Terrain-People move faster on flat ground than moving uphill

-Distance travelled-People run faster tat start as they are less tired

What are other speeds for vehicles-Car,Train,plane

Car-25m/s

Train-30m/s

Plane-250m/s

What’s the speed of sound in air and what does it depend on

330m/s

-Sound travels after in warm air than cooler ones

Why do objects rarely travel at constant speed

As speed is constantly changing

What’s defence between speed and velocity

Speed is how fast you’re going with no regard to direction e.g 30mph while velocity is speed in a given direction e.g 30mph north

How to calculate velocity

Find the speed then Meaure it’s direction e.g

Speed = 50/40=1.25 m/s south

What happens when a car moves in a circular motion

It moves at a constant speed but it’s direction is constantly changing so it’s velocity is constantly changing which includes part of a circle