PSA [Copy]

Transcript

00:01

Forces and motion PSA

00:04

Why should we wear helmets on a motorbike?

00:09

According to Michigan Auto Law

00:10

Motorcyclists are 28 times more likely to die than other vehicles in a car crash

00:14

Helmets are successful in avoiding fatal accidents in motorbike drivers and riders by 37% and 41%, respectively.

00:14

Helmets were believed to have saved the life of 1,872 motorcyclists in 2017 and could have saved 749 more if all motorcyclists wore them.

00:20

What is the physics behind the injuries in a motorbike collision?

00:23

Let's learn a bit about velocity and impact force

00:27

The velocity of a motorbike is the rate of change in its position with a specific direction

00:28

For example, 75 km/h, 40 km/h

00:31

Impact force is the force that exerts from one object to another when they collide

00:37

The relationship between velocity and impact force is a direct relationship

00:37

When the velocity increase, the impact force will also increase

00:43

During a collision, depending on the velocity, not only the motorbike will be damaged, but also the body and especially the head will receive serious impact force, leading to serious injuries.

00:52

The orange car hit the blue car

00:54

Action force: from the orange car to the blue car

00:54

Reaction Force: from the blue car to the orange car

00:59

NEWTON'S THIRD LAW OF MOTION:

01:00

there’s always a pair of force acts on an object which called action-reaction force, they are equal in force, but opposite in direction.

01:04

If you increase your motorbike's velocity, its acceleration will also increase.

01:06

Acceleration is the rate of change in velocity

01:06

The larger the acceleration, the larger the action force and also the larger the reaction force, which is the impact force the motorbike and the people on it receive.

01:13

So, when you suddenly collide with a car, another motorbike, or any object, your body will always receive an impact force. The severity is based on your velocity.

01:20

However, without wearing a helmet, the brain may receive tissue injuries and traumatic brain injury. Unlike other body parts, the brain cannot heal on its own in a short time so that will lead to more serious long-term problems.

01:29

Wear a helmet!!

01:33

The brain will receive less amount of impact force during a motorcycle collision when we wear a helmet.

01:38

You never know what will happen next

01:44

Another important note to remember

01:46

Control and drive your motorbike carefully

01:49

And of course with a properly and securely worn helmet

01:53

Don't forget to remind your family and friends about wearing helmets to protect them from serious traumatic brain injuries.

01:59

THANK YOU FOR WATCHING