A 1200 kg car travelling at 10 m/s hits a tree in 0.10 seconds. The change in momentum equals 60,000 kg m/s, and the total mass is now 12000 kg. What does this mean for a car’s motion? What is the change in momentum of a 1.5 kg car traveling at the same speed? Let’s explore these questions in more detail.
A car weighs one thousand kilograms, and a van weighs five hundred. The impact of two cars colliding will alter their momentum. Both cars will collide, and their momentum will be altered. The impact will result in the largest change in momentum. The collision will determine the speed of the vehicles. If the car collides with another object, its momentum will be the greatest.
The momentum of a 1200 kg car traveling at 10 meters per second is equal to 30,000 kilograms. The momentum change is much smaller if the car travels at twenty-five m/s. For example, if a car collides with a van traveling at 100 km/h, the force applied to the van will be twenty thousandx less than that applied by the car.
If the cars collide at ten meters per second, then the impact forces are the same. The vehicle’s impact force is 25% of the vehicle’s force. This collision is more likely to happen in an intersection than in a straight line. The greatest changes in momentum can be caused by collisions between objects. The forces on a vehicle result in change of momentum.
A van traveling at eight meters per seconds can impact an automobile weighing one thousand kilograms. A 1200 kilogram car is hit by a van that is moving at ten meters per second. The force of a van on a van at ten meters/second is 2,000 N. In contrast, a police car traveling at 80km/h has a mass of 1.1×103 kg/s.
A van travelling at the same speed and weighing 1200 kg collides with a car that is traveling at 10 m/s. If the two cars collide, the momentum of the car is equal to 30,000kg. The difference in mass and velocity is referred to as the “inertial” force. The force that causes a change of momentum is called the force of collision between two objects.
A 1200 kg car travelling at ten meters per second collides with a van that is traveling at ten meters/second. The two objects are stationary, but the police car is driving at a high speed. It cannot pass a red sedan. To stop a car at ten metres, it needs a braking force of twenty-thousand nm. And the same applies to a van at a higher speed.
The driver should apply the same force to both objects if a car is moving at ten meters per seconds. If the police car is traveling at ten kilometers per hour, it must overtake the red sedan to avoid a collision with the van. Two factors can cause this collision. A red sedan must pass a police car traveling at eighty kilometers per hour.
A 1200 kilogram car traveling at ten meters per second encounters a van that is traveling at ten kilometers per hour. The van is stopped by the police car first. The van is traveling at four hundred fifty kilometers an hour. Secondly, the speed of the police car is the same as that of the red sedan. Hence, a policeman must overtake the red sedan at ten meters to stop the red sedan from hitting it.
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