3.3. Linear momentum and its conservation
A subsection of Physics, 9702, through 3. Dynamics
Listing 10 of 111 questions
A bullet of mass 2.0 g is fired horizontally into a block of wood of mass 600 g. The block is suspended from strings so that it is free to move in a vertical plane. The bullet buries itself in the block. The block and bullet rise together through a vertical distance of 8.6 cm, as shown in . Calculate the change in gravitational potential energy of the block and bullet. change = J Show that the initial speed of the block and the bullet, after they began to move off together, was 1.3 m s–1. 8.6 cm bullet wood block [T Using the information in and the principle of conservation of momentum, determine the speed of the bullet before the impact with the block. speed = m s–1 Calculate the kinetic energy of the bullet just before impact. kinetic energy = J State and explain what can be deduced from your answers to and about the type of collision between the bullet and the block.
9702_s05_qp_2
THEORY
2005
Paper 2, Variant 0
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In perfectly elastic collisions between two atoms, it is always true to say that A the initial speed of one atom will be the same as the final speed of the other atom. B the relative speed of approach between the two atoms equals their relative speed of separation. C the total momentum must be conserved, but a small amount of the total kinetic energy may be lost in the collision. D whatever their initial states of motion, neither atom can be stationary after the collision.
9702_s06_qp_1
MCQ
2006
Paper 1, Variant 0
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Questions Discovered
111