# Readers ask: In Karate Why Is A Force That Is Applied For A Start Time More Advantageous?

## Why is it advantageous in karate to apply a force for a short time?

In karate, why is a short time for the applied force advantageous? The shorter time is accompanied by a greater force when the momentum of the arm is reduced. Stopping and then reversing direction is a greater change in momentum and therefore requires a greater impulse.

## Why is a force that is applied for a short time?

Answer: The average force is increased. A force that is applied for a short time is able to deliver a high impact force for the same change in momentum. If the time is small the force will be greater Ft=mv.

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## Why is it advantageous to roll with the punch in boxing?

Why is it advantageous to roll with the punch in boxing? Rolling with the punch increases contact time, which decreases the force. Which undergoes the greatest change in momentum (if all of the baseballs have the same speed just before being caught and just after being thrown)?

## Why is it a good idea to extend your hand forward?

Why is it a good idea to extend your bare hand forward when you are getting ready to catch a fast-moving baseball? So you can pull your hand back, increasing the time to slow the ball thus deceasing the force.

## What are 2 ways to increase impulse?

2 ways through which the impulse can be increased are: 1) Increasing the force 2 ) increasing the time over which the force acts.

## Why is it less damaging if you fall on a mat than if you fall on a solid floor?

Why is it less damaging if you fall on a mat than if you fall on a solid floor? The time to come to a stop will be longer on the mat. This means a longer time to stop and a smaller force. No, momentum is not conserved, for an impulse acts on the cannonball.

## What is the direction of the force you applied?

An applied force is an interaction of one object on another that causes the second object to accelerate or change velocity or direction. The force can be a push, pull, or drag. The resulting direction of an object depends on the relative direction of the force on the object.

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## What are the two types of force?

There are 2 types of forces, contact forces and act at a distance force. Every day you are using forces. Force is basically push and pull. When you push and pull you are applying a force to an object.

## How does Dr Hewitt break the piece of wood?

How does Dr. Hewitt break the piece of wood? He causes a change in momentum of his hand over a short period of time. Increase the change in momentum, and decrease the time duration.

## Can you produce a net impulse on a car by sitting inside and pushing on the dashboard?

Can you produce a net impulse on an automobile if you sit inside and push on the dashboard? Only external forces produce changes in momentum, so no you cannot as it is an internal force. Railroad car A rolls at a certain speed and makes a perfectly elastic collision with car B of the same mass.

## What has the greatest impulse?

Explain. Balloon B has the greatest impulse. Impulse is equal to momentum change.

## When you are lucky enough to catch a fly ball with your bare hand while watching a baseball game your hand will be best off if you catch the ball with your hand extended toward the ball then while contact is being made?

Why is it a good idea to have your hand extended forward when you are getting ready to catch a fast-moving baseball with your bare hand? An extended hand can move a greater distance when the ball is caught. The greater distance is accompanied by a longer time, which results in less force. 9.

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## When you jump from an elevated position?

When you jump from an elevated position you usually bend your knees upon reaching the ground. By doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing.

## Why it feels better to catch a baseball while wearing a padded glove than bare handed?

Since the time of the collision is less when we use a bare hand, the average force exerted by the bare hand must be greater than the average force exerted when we use a padded glove. Since the average force is less when we use a padded glove, it feels better to catch a hard ball when wearing a padded glove.