Velocity, speed and acceleration

5m/s velocity

5m/s North East

5m/s speed

5m/s going round

Velocity is speed in a given direction

An object moving at a steady speed is accelerating if its direction is changing

Work in pairs to think of 4 situations which exemplify speed oracceleration

egAt constant speed on a round about your direction is changing soyour velocity is changing

Wet Clothes are dried when spun because their velocity changes ,they are being accelerated and experience centripetal force!

A car moving at 60 mph collides with a car moving at 30mph. Theamount of damage depends on the cars original directions.

A fair ground ride where your velocity changes and not just yourspeed is more interesting

Work in pairs to think of 4 situations which exemplify speed oracceleration

egAt constant speed on a round about your direction is changing soyour velocity is changing

Wet Clothes are dried when spun because their velocity changes ,they are being accelerated and experience centripetal force!

A car moving at 60 mph collides with a car moving at 30mph. Theamount of damage depends on the cars original directions.

A fair ground ride where your velocity changes and not just yourspeed is more interesting

Work in pairs to think of 4 situations which exemplify speed oracceleration

egAt constant speed on a round about your direction is changing soyour velocity is changing

Wet Clothes are dried when spun because their velocity changes ,they are being accelerated and experience centripetal force!

A car moving at 60 mph collides with a car moving at 30mph. Theamount of damage depends on the cars original directions.

A fair ground ride where your velocity changes and not just yourspeed is more interesting

Work in pairs to think of 4 situations which exemplify speed oracceleration

egAt constant speed on a round about your direction is changing soyour velocity is changing

Wet Clothes are dried when spun because their velocity changes ,they are being accelerated and experience centripetal force!

A car moving at 60 mph collides with a car moving at 30mph. Theamount of damage depends on the cars original directions.

A fair ground ride where your velocity changes and not just yourspeed is more interesting

Acceleration = change in velocity (m/s) time (s)

(m/s/s)

Acceleration is the change in velocity each second.

eg What is the acceleration of the cyclist?

Initial speed = 8 m/sfinal speed = 20 m/stime taken = 6 sec

acceln = v = 12 m/s t 6 s

= 2m/s/s

Acceleration = change in velocity (m/s) time (s)

(m/s/s)

Acceleration is the change in velocity each second.

eg What is the acceleration of the cyclist?

Initial speed = 8 m/sfinal speed = 20 m/stime taken = 6 sec

acceln = v = 12 m/s t 6 s

= 2m/s/s

Acceleration = change in velocity (m/s) time (s)

(m/s/s)

Acceleration is the change in velocity each second.

eg What is the acceleration of the cyclist?

Initial speed = 8 m/sfinal speed = 20 m/stime taken = 6 sec

acceln = v = 12 m/s t 6 s

= 2m/s/s

Initial speed = 8 m/sfinal speed = 20 m/stime taken = 6 sec

acceln = v = 12 m/s t 6 s

= 2m/s/s

Calculate these accelerations:

Q1. A motor bike accelerates from 10m/s to 20m/s in 2 sec.

Q2. Concorde accelerates from rest to 40m/s in 10 sec.

Q3. A wasp accelerates from 2m/s to 6m/s in 1sec.

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v =

t

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v = 10 m/s = 2 m/s/s

t 5 s

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v = 10 m/s = 2 m/s/s

t 5 s

b. Uniform Velocity:

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v = 10 m/s = 2 m/s/s

t 5 s

b. Uniform Velocity: 10m/s ( zero acceln )

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v = 10 m/s = 2 m/s/s

t 5 s

b. Uniform Velocity: 10m/s ( zero acceln )

c. Steady deceleration: (- ve Acceleration)

acceln = v = - t

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

a. Steady Acceleration: acceln = v = 10 m/s = 2 m/s/s

t 5 s

b. Uniform Velocity: 10m/s ( zero acceln )

c. Steady deceleration: (- ve Acceleration)

acceln = v = -10 m/s = -1 m/s/s t 10 s

a

b

c

Velocity(m/s)

10

5

0 5 10 15 20 25 time / s

Acceleration is the gradient or slope of a velocity : time graph.

The distance travelled is the area under a v:t graph.

Velocitym/s

10

5

0 5 10 15 20 25 time / s

The distance travelled is the area under a v:t graph.

Velocitym/s

10

5

0 5 10 15 20 25 time / s

b

a c

The distance travelled is the area under a v:t graph.

Velocitym/s

10

5

0 5 10 15 20 25 time / s

5 x 10 = 25m 2

b

a c

The distance travelled is the area under a v:t graph.

Velocitym/s

10

5

0 5 10 15 20 25 time / s

5 x 10 = 25m 2

10 x 10= 100m

b

a c

The distance travelled is the area under a v:t graph.

Velocitym/s

10

5

0 5 10 15 20 25 time / s

5 x 10 = 25m 2

10 x 10= 100m

10 x 10 = 50m 2

b

a c

If investigating how the slope of a runway affects a trolley’s acceleration:

a) Name 1. The independent variable 2. The dependent variable

b) What is the relationship between the variables?

If investigating how the slope of a runway affects a trolley’s acceleration:

a) Name 1. The independent variable 2. The dependent variable

b) What is the relationship between the variables?

If investigating how the slope of a runway affects a trolley’s acceleration:

a) Name 1. The independent variable 2. The dependent variable

b) What is the relationship between the variables?

Distance from sensor

Time

Which car has the highest acceleration? X or Y