# Why padded dashboards are used in cars is that they increase the time of impact in a collision?

## Why padded dashboards are used in cars is that they increase the time of impact in a collision?

If the driver or passenger should hit the dashboard, then the force and time required to stop their momentum is exerted by the dashboard. Padded dashboards provide some give in such a collision and serve to extend the time duration of the impact, thus minimizing the effect of the force.

## Is it correct to say that impulse is equal to?

Key terms. Product of the average force exerted on an object and the time interval during which the force is exerted. Impulse is equal to the change in momentum ( ‍ ) and is sometimes represented with the symbol ‍ .

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## Is the speed of a bullet fired from a gun will be about the same as the speed of the recoiling gun?

because velocity is conserved. A bullet is fired from a gun. The speed of the bullet will be about the same as the speed of the recoiling gun? because velocity is conserved.

## When you push an object twice as far while applying the same force you do?

Therefore, this means that the work will be doubled if we push the object twice as far using the same amount of force.

## What is the physics reason for padding dashboards?

If the driver or passenger should hit the dashboard, then the force and time required to stop their momentum is exerted by the dashboard. Padded dashboards provide some give in such a collision and serve to extend the time duration of the impact, thus minimizing the effect of the force.

## What affects the amount of force needed to change the motion of a moving bowling ball?

Because the bowling ball has more inertia, it will be more difficult to change its motion, so it will need more force (Newton’s 3rd) if you wanted to achieve the same acceleration.

## What unit is momentum in?

In the International System of Units (SI), the unit of measurement of momentum is the kilogram metre per second (kg⋅m/s), which is equivalent to the newton-second.

## Is impulse equal to velocity?

The impulse experienced by an object is the force•time. The momentum change of an object is the mass•velocity change. The impulse equals the momentum change.

## What newton’s law is impulse?

Impulse is the product of force and time, and can be calculated using the area under a force-time graph. This theorem is based on Newton’s second law, which states that the force applied to an object is equal to its mass times its acceleration.

## Why does a heavy rifle not recoil?

Veloctiy (or) recoil v=mvV i.e ., ratio of momentum of bullet to mass of gun . If mass of gun is high then velcity of recoil is less with same cartridge .

## Why do guns recoil when fired?

According to Newton’s Third Law of motion, every action has an equal and opposite reaction. When a gun fires a bullet, the gun puts a force on the bullet that propels it forward. The bullet likewise exerts an equal and opposing force on the gun in the backward direction.

## How fast is a AK 47 bullet in km h?

Something like an AK-47, among the most common firearms in the world, doesn’t fire bullets any faster than many other rifles, with a muzzle velocity of about 1,600 mph (2,580 km/hr). But because it’s an automatic weapon, it fires continuously until the trigger is released, and can eject up to 600 rounds per minute.

Padded dashboards decrease the velocity of crash, which reduces the force of injury.

## Are padded dashboards in cars safer in an accident?

Answer and Explanation: For the same change in the momentum, if the time period increases then the impact force decreases. This leads to less injury to the driver of the car. Thus, padded dashboards in cars are safer in an accident as they increase the time of impact.