#### what bisects south america

What Bisects South America? Most of South America is so...

Following through **maximizes the length of time the bat is in contact with the ball**. This maximizes the impulse, allowing the greatest change in momentum and the greatest change in velocity.

Would you be safe in firing a gun that has a bullet 10 times as massive as the gun? … **The gun would recoil with a speed ten times the muzzle velocity**. Firing such a gun in the conventional way would not be a good idea.

When jumping from a great height, our feet at once come to rest. For the small time when our legs comes to rest, a large value of force is exerted on our feet. When the knees are bent slowly, **the value of time of impact increases and less force acts on feet**. Therefore, the probability of getting injured is less.

Answer: This is a consequence of the impulse momentum principle. When we bent our knees on landing, **the time of impact increases and reduces the average force exerted during the entire process**. This prevents the chance of damage to our body.

It is commonly thought that, **the higher one is, the easier it is to jump**, but not always tall jumpers can obtain differentials achieved by shorter jumpers, who are able to take advantage of other qualities. By differential, we mean the difference between the jumped height and the athlete’s one.

When a boxer is moving away from a punch, the force experienced is **reduced because the impact force is reduced by increasing the time of contact with**…

How does “riding a punch” reduce the impact force between the fist and head? **It increases the impact time of the collision.**

In both cases most of the transferred momentum will be absorbed and carried by the target’s muscles and he will feel the pain. It explains why the punch will be less **if the target moves towards the punch**.

In words, it could be said that the force times the time **equals the mass times the change in velocity**. In physics, the quantity Force • time is known as impulse. And since the quantity m•v is the momentum, the quantity m•Δv must be the change in momentum. The equation really says that the Impulse = Change in momentum.

Force is a measure of the change of momentum over time. It can be written as **F = mass x change in velocity / time**. In practical terms, the momentum of an object increases when a force is acting upon it, because the force is causing it to accelerate, and to have an increase in velocity.

In classical mechanics, **impulse** (symbolized by J or Imp) is the integral of a force, F, over the time interval, t, for which it acts. … The SI unit of impulse is the newton second (N⋅s), and the dimensionally equivalent unit of momentum is the kilogram meter per second (kg⋅m/s).

The two forces acting on rockets at the moment of launch are the **thrust upwards** and the weight downwards. Weight is the force due to gravity and is calculated (at the Earth’s surface) by multiplying the mass (kilograms) by 9.8.

When a vertically falling firecracker bursts, the vector sum of momentum fragments. Both in the vertical direction equals the **momentum** of the firecracker before bursting and in the horizontal direction cancels to zero. continue allong the path as if the explosion didnt occur.

Yes because when you catch the ball it exerts a force on you. This **force has an impulse**. impulse of throwing it. Why is more impulse delivered during a collision when bouncing occurs than during one when it doesn’t?

Hint: Impulse of a force is the time integral of a force. Impulsive forces, on the other hand, are great forces acting on a body for a short period of time. It is defined as the **rate of change of momentum of** a body during the time of the application of the force.

Impulse is **the change of momentum of an object when the object is acted upon by a force for an interval of time**. So, with impulse, you can calculate the change in momentum, or you can use impulse to calculate the average impact force of a collision. A longer collision or impact time translates to a smaller force.

The **product of the force & the time for which it acts on a body** is called impulse of a force. The force acting on a body for short interval of time is called impulsive force.

Anti-tank guns are guns designed to destroy **armored vehicles** from defensive positions. … Any field artillery cannon with barrel length 15 to 25 times longer than its caliber was able also to fire anti-tank ammunition, such as the Soviet A-19.

6-pounder gun or 6-pdr, usually denotes a **57-millimetre (2.2 in) gun firing a projectile weighing approximately 6 pounds (2.7 kg)**.