FAQ: Why Is Advantageous In Karate To Apply A Force For A Short Time?

Why is a force that is applied for a short time more effective in karate?

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.

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)?

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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.

What impulse occurs when an average force of 10?

Physics the fourth

A B
What impulse occurs when an average force of 10 N is exerted on a cart for 2.5 s? 10 N x 2.5 s = 25 Nxs
What change in momentum did the cart undergo? 25 kg x m/ s
If the mass of the cart is 2 kg and the cart is initially at rest, calculate it’s final speed. 12.5 m/ s

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.

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.

When two vehicles collide momentum is conserved?

An inelastic collisions occurs when two objects collide and do not bounce away from each other. Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved.

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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.

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.

What is the relationship between the gain in kinetic energy and the work when work is done?

What is the relationship between the gain in an object’s kinetic energy when work is done on the object? The work is equal to the gain in the kinetic energy.

Does force produce acceleration?

Acceleration and velocity Newton’s second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.

What is another way of saying getting the smallest possible force?

Explanation: another way of saying getting the smallest force possible is the word ” MOMENTUM”. momentum is the ability to keep maintaining,incresing or itself developing to move at constant speed or to increase the speed.

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When two objects collide what is always conserved?

In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.

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