Homework help on momentum plz?

Question

Can someone plz help he on any of these problems so that I can double check and complete some of my work ???


2. A halfback, with a mass of 95kg abd moving at 4.1m/s, on an apparent breakaway for a touchdown is tackled from behind by a cornerback whose mass is 85kg running at 5.5 m/s in the same direction. What was their mutual speed immediately after the touchdown-saving tackle?

3. A 9500kg boxcar traveling at 16 m/s strikes a second car. The two stck together and move at a speed of 6 m/s. What is the mass of the second car?

4. A 15g bullet strikes and becomes embedded in a 1.1 kg block of woob placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.25 and the impact drives the block a distance of 9.5m before it comes to rest, what was the muzzle speed of the bullet?

Answer 1

2. A halfback, with a mass of 95kg abd moving at 4.1m/s, on an apparent breakaway for a touchdown is tackled from behind by a cornerback whose mass is 85kg running at 5.5 m/s in the same direction. What was their mutual speed immediately after the touchdown-saving tackle?

[PDF]
Linear Momentum (Ch 9) Think-Pair-Share Linear Momentum, cont ...
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When he was tackled. by an 85-kg cornerback running at 5.5 m/s in. the same direction, what was their mutual. speed immediately after the tackle? ...
www.sos.siena.edu/~rfinn/phys130/P130-12



3. A 9500kg boxcar traveling at 16 m/s strikes a second car. The two stck together and move at a speed of 6 m/s. What is the mass of the second car?

PHYSICS - THANKSGIVING EXAM
7. A 9500-kg boxcar traveling at 16 m/s strikes a second car. The two stick together and move off with a speed of 6 m/s. What is the mass of the second car? ...
faculty.coloradomtn.edu/jeschofnig/class/class_jeschof/exam.htm



4. A 15g bullet strikes and becomes embedded in a 1.1 kg block of woob placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.25 and the impact drives the block a distance of 9.5m before it comes to rest, what was the muzzle speed of the bullet?

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