Table of Contents

- 1 What happens when two objects of different masses collide?
- 2 What happens when two cars collide at different speeds?
- 3 When the speed of an object is doubled what is the momentum?
- 4 When comparing the momentum of two moving objects which of the following is correct *?
- 5 How is energy lost in a collision?
- 6 When two objects collide where does the energy go?

## What happens when two objects of different masses collide?

In accord with Newton’s second law of motion, the acceleration of an object is dependent upon both force and mass. Thus, if the colliding objects have unequal mass, they will have unequal accelerations as a result of the contact force that results during the collision.

### What happens when two cars collide at different speeds?

“Although the two-car crash doubles the speed, the energy the crash is transferred to twice the mass resulting in a crash that looks like just one car hitting a wall at 50 mph.” It doesn’t really add any useful explanation other than to point out that the kinetic energy is dependent on the square of the velocity.

**When a moving object collides with an object that isn’t moving what happens to the kinetic energy?**

In the extreme case, multiple objects collide, stick together, and remain motionless after the collision. Since the objects are all motionless after the collision, the final kinetic energy is also zero; the loss of kinetic energy is a maximum. Such a collision is said to be perfectly inelastic.

**What happens to the energy of a moving object when it collides with another object?**

When objects collide, energy can be transferred from one object to another, thereby changing their motion. In such collisions, some energy is typically also transferred to the surrounding air; as a result, the air gets heated and sound is produced. Light also transfers energy from place to place.

## When the speed of an object is doubled what is the momentum?

If the velocity of a body is doubled then its momentum doubles because velocity is directly proportional to the momentum. So option 2 is correct.

### When comparing the momentum of two moving objects which of the following is correct *?

When comparing the momentum of two moving objects, which of the following is correct? The object with the higher velocity will have less momentum if the masses are equal. The more massive object will have less momentum if its velocity is greater.

**When two cars collide What happens to the kinetic energy?**

When two cars collide, the kinetic energy is used up to fold the metal of the auto, keeping the destructive energy out of the passengers. The same science is behind the recommendation that motorcyclists wear helmets and body armor.

**When 2 cars collide with each other the force of impact on both cars is the same?**

The physics of a car collision will never, no matter how energetic, emit a completely new car. The car would experience exactly the same force in both cases. The only force that acts on the car is the sudden deceleration from v to 0 velocity in a brief period of time, due to the collision with another object.

## How is energy lost in a collision?

In a perfectly inelastic collision, i.e., a zero coefficient of restitution, the colliding particles stick together. In such a collision, kinetic energy is lost by bonding the two bodies together. This bonding energy usually results in a maximum kinetic energy loss of the system.

### When two objects collide where does the energy go?

When objects collide, the energy transfers from one object to the other. Energy is the ability to do work (or in more simple terms: energy makes things happen). The amount of energy transferred during a collision depends on the weight and speed of the moving object.

**What happens to the energy in a collision?**

When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. The total system kinetic energy before the collision equals the total system kinetic energy after the collision. If total kinetic energy is not conserved, then the collision is referred to as an inelastic collision.