4. A policeman (mass-83.5 kg) jumps straight down from a ship into a lifeboat (m

Question

4. A policeman (mass-83.5 kg) jumps straight down from a ship into a lifeboat (mass- 284 kg) in which a criminal is fleeing. The horizontal velocity of the lifeboat after the policeman lands is +2.35 m/s. What is the initial horizontal velocity of the lifeboat, before the policeman jumps? (3.04 m/s) 5. A 4.90-g bullet moving at 578 m/s strikes a 885-g wooden block at rest on a frictionless surface. The bullet emerges, traveling in the same direction with its speed reduced to 379 m/s. (a) What is the resulting speed of the block? (b) What is the impulse transferred from the bullet to the block? (a) 1.10 m/s:(b)0975 Ns) 6. A 3.80-kg ball, moving to the right at a velocity of +4.90 m/s on a frictionless table, collides head-on with a stationary 8.20-kg ball. Find the final velocities of (a) the 3.80-kg ball and of (b) the 8.20-kg ball if the collision is elastic. (c) Find the final velocity of the two balls if the collision is completely inelastic. (1.8 m/s, 3.1 m/s, 1.55 mls) 7. By accident, a large plate is dropped and breaks into three 3.00 ms pieces. The pieces fly apart parallel to the floor. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor. After the collision, the component of the total momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to the floor. Using the data shown in the drawing find (a) the mass of piece 1 and (b) the mass of piece 2. (0.998 kg, 1.00 kg) 25 1.79 mis 2450 = 1.305g 3.07 m's

Explanation / Answer

Applying conservation of energy along.x axis

M1v1= (m1+m2)v

V1= (284+83.5)*2.35/(284)= 3.04 m/s

According to Chegg guidelines we can solve one problem at a time so please reattach your other problems seperately..goodluck

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