During crash, force at which the body is jerked forward depends on what two factors?

Combined speed at impact and hardness of the car body.

Why are air bags in cars considered safety precautions?

The airbag absorbs the force that would cause injury

In crashes, the car decelerates because

Force from front to the back is bigger

If the passenger does not wear a seat belt...

The passenger will continue to move around in the car

What equation could be used to calculate the force acting on car passenger during crash?

Opposite Force = Mass x Acceleration, Opposite Force = Mass x Decceleration

What is the speed at which the passenger in the car of a collision hits the steering wheel?

It is equal to the speed the car was going before the crash.

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Physics Behind Car Collisions

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Taken from Physics Project Quiz for Mr.Smead's 1B class.

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Questions 16

Answers

1
During crash, force at which the body is jerked forward depends on what two factors?
Combined speed at impact and hardness of the car body.
Speed and Acceleration of the car
Gravity and Acceleration of the car
Position of the person in the car and speed of the car.
2
Try this
42.2 ms-2
8.10 ms-1
8.10 ms-2
42.2 ms-1
3
Cars with a large momentum...
Result in less crashes
Have small inertia
Are easier to see
Are harder to stop
4
Why are air bags in cars considered safety precautions?
There should be no airbags in cars.
The airbag absorbs the force that would cause injury
The airbag causes more damage than protection
The airbag is a pillow, it reduces time of impact
5
In crashes, the car decelerates because
Force acting on cars are balanced
Force acting on cars are at equilibrium
Force from front to the back is bigger
Force from back to front is bigger
6
If the passenger does not wear a seat belt...
The passenger will continue to move around in the car
The person will be able to control their body
The passenger will decelerate with the car
The car will explode
7
Which of the following doesn't impact the degree of damage due to car crash?
Angle of collision
Weight of car
Initial speed
Weight of passenger
8
A truck ramming into a car would be...
An Elastic Collision
An Inelastic Collision
A tragedy
A change in its weight
9
The harder the car body...
The higher the acceleration.
The lower the acceleration rate.
More damage on car
Less injury to passenger
10
Try this
1004 m
504 m
404 m
704 m
11
Try this
0.1 ms-2
0.1 ms-1
0.712 ms-1
0.712 ms-2
12
Which two topics in physics can be applied to car crashes?
Pendulums and Electricity
Newton's Laws and Sound Waves
Newton's Laws and Momentum
Momentum and Electricity
13
Which two of Newton's laws determine the amount of force present at collisions?
1st and 3rd
1st and 2nd
None
2nd and 3rd
14
What equation could be used to calculate the force acting on car passenger during crash?
Opposite Force = Mass x Acceleration
Opposite Force = Mass x Time
Opposite Force = Mass x Decceleration
Opposite Force = Acceleration x Times
15
What is the speed at which the passenger in the car of a collision hits the steering wheel?
It is equal to the speed the car was going before the crash.
It is eighty miles per hour.
It can not be calculated because they are moving too fast.
It is equal to the speed of the car as it hits the object.
16
Try this.
1638.4 m/s
163.84 m
1.6384 km
1638.4 s

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