# What is the difference between impact force and impulse?

• fork
In summary, the conversation discussed the difference between impact force and impulse. Impact force is the force applied when an object comes to a complete stop, while impulse is the change in momentum due to a force applied over a certain time interval. The answer to the question of the difference between the two is B.
fork
A tennis ball is dropped from a certain height onto the top pan of the balance measure?
A.Weight of the ball.
B.Impact force on the pan due to the ball.
C.Impulse on the pan due to the ball.

Actually, what is the difference between impact force and impluse, thanks.

The impulse of a force is the force multiplied by the time over which it is applied. If an impulse is applied to an object, the impulse is equal to the change in momentum of the object.

fork said:
A tennis ball is dropped from a certain height onto the top pan of the balance measure?
A.Weight of the ball.
B.Impact force on the pan due to the ball.
C.Impulse on the pan due to the ball.

Actually, what is the difference between impact force and impluse,

Newton's second law can be stated in the following ways:

$$F = dp/dt = d(mv)/dt = mdv/dt = ma$$

Think of the tennis ball hitting the ground and coming to a complete stop. The force is:

$$F = dp/dt = \frac{0 - mv}{\Delta t}$$

The quantity:
$$F\Delta t = \Delta p = m\Delta v$$

is called the impulse: a force applied for a certain time interval. It is equal to the change in momentum of the mass to which the force is applied.

AM

O, i get it, so the ans is B.

## 1. What is momentum in physics?

Momentum is a physical quantity that measures the motion of an object. It is defined as the product of an object's mass and velocity. In simpler terms, it is the amount of force an object has when it is in motion.

## 2. How is momentum calculated?

Momentum is calculated by multiplying an object's mass (m) by its velocity (v). The formula for momentum is p = mv.

## 3. What is the law of conservation of momentum?

The law of conservation of momentum states that in a closed system, the total momentum before an event or interaction is equal to the total momentum after the event or interaction. This means that momentum is conserved and cannot be created or destroyed, only transferred between objects.

## 4. How is momentum different from inertia?

Inertia is the tendency of an object to resist changes in its motion, while momentum is a measure of an object's motion. Momentum takes into account both the object's mass and velocity, while inertia only considers the mass of an object.

## 5. What are some real-life examples of momentum?

Some real-life examples of momentum include a moving car, a rolling ball, a swinging pendulum, and a person running. In each of these cases, the objects have both mass and velocity, and therefore possess momentum.

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