Two objects constitute an isolated system. In an elastic collision between the two objects, which one of the following statements is a false statement? The total momentum is conserved. The kinetic energy of each object is the same before and after the collision. The magnitudes of the forces exerted by each object on the other object are equal. The total kinetic energy is conserved. The total kinetic energy before the collision is equal to the total kinetic energy after the collision.

Collisions: in a perfectly ELASTIC collision between two perfectly rigid objects:

1.A cart of mass m moves with a speed v on a frictionless airtrack and collides with an identical cart that is stationary. If the two carts stick together after the collision, what is the final kinetic energy of the system?Explain and labled the problem.

Cons Block 1, of mass m1 = 2.90 kg , moves along a frictionless air track with speed vị with block 2, of mass m2 = 57.0 kg , which was initially at rest. The blocks stick together after the collision. (Figure 1) 13.0 m/s. It collides %3D Part A Part B Part C What the change AK = Kfinal – Kiniti. in the two-block system's kinetic energy due the collision? Express your answer numerically in joules. • View Available Hint(s) Figure 1 of 1 HV ΑΣφ ? Before collision: m2 m1 AK = 1 Submit After collision: Provide Feedback 1 2.

An isolated system consists of two objects, A and B, moving without friction along a horizontal x-axis. The figure shows the initial masses and speeds of these objects. 7.00 m s-¹ 2.00 kg A Check 5.00 m s-¹ Final kinetic energy initial kinetic energy = || 3.00 kg The two objects then suffer an inelastic collision, after which they remain stuck together, traveling as a single composite object, confined to the x-axis. None of these objects rotates. - B What is the difference between the final kinetic energy of the composite object and the total initial kinetic energy of A and B? Give you answer by entering a number, specified to an appropriate number of significant figures, into the empty box. V J.

tolerance is 3 sig figs

A 0.015-kg bullet is fired into a stationary block of wood of mass of 5.2 kg. The relative speed of the bullet with respect to the wood is zero after collision (The bullet becomes embedded on the block of wood). If the speed of the bullet before collision is 462 m/s, what is the kinetic energy of the bullet plus-wood combination right after the collision? Assume no change in the potential energy of the system before and after the collision. Express your answer in two decimal places, in Joules.