A 500kg truck moving a 30ms strikes a parked car with a mass of 300kg?

Answer 1

It is a perfectly inelastic collision.

Types of collisions:

* Perfectly inelastic- collision in which two objects stick together after the collision so that their final velocities are the same. * Elastic-collision in which the two objects bounce after the collision so that they move separately * Inelastic-collision in which the two objects deform during the collision so that the total kinetic energy decreases , but the objects move separately after the collision.

Answer 2

This is a conservation of momentum problem. Total momentum after collision = total momentum before collision. truck momentum before is MV = 500 x 30 = 1500 kg m/s car momentum before is = 0 (car at rest) truck momentum after = MU = 500 x U Car momentum after = mU = 300 x U SO: 500U + 300U = 1500 + 0 800U = 1500 U = 1.875 m/s

Answer 3

Kinetic energy of an object is (m*v^2)/2 for the truck that's (500*30*30)/2 = 225,000 and '0' for the parked car. Because the new total mass after the crash is 800kg we have to solve the equation with this value. (800*v^2)/2=225,000 800*v^2 = 450,000 v^2 = 562.5 v = 23.7m/s or about 53mph However, the actually speed will be substantial slower as the 'crash' will result in deformation of the cars and crumple zones are there to 'eat' energy. Therefore the two cars will have less than the original 225,000 units of kinetic energy; ergo a slower resulting speed. How slow depends on the crash and how effective the energy absorption of the crumple zones was.

Answer 4

A body must have velocity in order to have momentum. The difference is that a 5000 kg truck has more mass and therefore more inertia (Newton's first law). Inertia is the resistance to change in motion and so that's where the misconception of momentum and mass occur.

Answer 5

To get an answer, you must know the mass of the parked car. the parked car has a mass of 300kg

Answer 6

15,000 kg-m/s...
momentum=mass x velocity

The crashing into the car is irrelevant

Answer 7

15,000 kg m/s

Answer 8

big expensive mess