You are throwing a ball straight up in the air. At the point, the ball\'s veloci

Question

You are throwing a ball straight up in the air. At the point, the ball's velocity and acceleration are zero. Velocity is nonzero but its acceleration is zero. Acceleration is nonzero, but its velocity is zero. Velocity and acceleration are both nonzero. A uniform is balanced an shown in the figure below with so the left end of the (Pay attention to the of the diagram.) What is the mass of the .38 0.6 1.2 1.8 In a common physics demonstration, two identical carts having rigid metal surfaces and equal speeds collide with each other. Each cart has a piece of attached to the end of a spring. Which of the following are always true? The collision is inelastic The collision is elastic Momentum is conserved Momentum is not conserved Kinetic energy is conserved Kinetic energy is not conserved I. and VI. Only II. And IV only I, IV., and VI, I, III., only I, III., and VI. or problems (5-7) Two identical objects are pressed against two different springs so that each spring the same potential energy. The objects are then released from rest One spring is quite stiff(hard compress). while the other one is quite flexible. Consider the following statements:

Explanation / Answer

14)
Initial Momentum = M*vo - M*vo = 0
So, Final Momentum = 0


Momentum is allways conserved !!

The collision is inelastic !!

For Inelastic Collision, Kinetic Energy is not conserved !!

Therefore correct option :-(E)

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