If the momentum of a mass M is doubled, its kinetic energy will bemultiplied by
ID: 1753162 • Letter: I
Question
If the momentum of a mass M is doubled, its kinetic energy will bemultiplied by a factor of what?An 1810 kg truck traveling eastward at 64.4 km/h collides at anintersection with a 905 kg automobile traveling northward at 96.5km/h. The vehicles lock together and immediately after thecollision are headed in which direction?
Glider A, traveling at 10 m/s on an air track, collides elasticallywith glider B traveling at 8.0 m/s in the same direction. Theglider are of equal mass. The final speed of glider B iswhat?
A 1.0 kg mass is acted on by a net force of 4.0 N in the northwarddirection. A 3.0 kg mass is acted on b a net force of 3.0 Nin an eastward direction. The acceleration of the center ofmass of this system is approximately what?
Two equal masses travel in opposite directions with equalspeed. If they collide in a perfectly elastic collision,then, just after the collision, their velocities will be what?
A 1500 kg car traveling at 90.0 km/h east collides with a 1000 kgcar traveling at 60.0 km/h south. The two cars stick togetherafter the collision. What is the direction of the motion ofthe cars after the collision? What is the speed of thecars after the collision?
A 500 kg sack of coal is dropped on a 2000 kg railroad flatcarwhich was initially moving at 3 m/s. After the sack rests onthe flatcar, the speed of the flatcar is what?
A He^4 nucleus(atomic weight 4) moving with speed v breaks up intoa neutron(atomic weight 1) and a He^3 nucleus. The neutronmoves off at right angles to the original He^4. If theneutron speed is 3v, the final speed of the He^3 nucleus iswhat?
Explanation / Answer
If the momentum of a mass M is doubled, its kinetic energy will bemultiplied by a factor of what? ke=p2/2m so if momentum is doubled kinetic energy will be multipliedby a factor of 4 An 1810 kg truck traveling eastward at 64.4 km/h collides at anintersection with a 905 kg automobile traveling northward at 96.5km/h. The vehicles lock together and immediately after thecollision are headed in which direction? split the velocities into components using conservation principle findout the final velocity anddirection of motion. Glider A, traveling at 10 m/s on an air track, collides elasticallywith glider B traveling at 8.0 m/s in the same direction. Theglider are of equal mass. The final speed of glider B iswhat? 10m/sec A 1.0 kg mass is acted on by a net force of 4.0 N in the northwarddirection. A 3.0 kg mass is acted on b a net force of 3.0 Nin an eastward direction. The acceleration of the center ofmass of this system is approximately what? find out the resultant forceand divide it with the total mass. Two equal masses travel in opposite directions with equalspeed. If they collide in a perfectly elastic collision,then, just after the collision, their velocities will be what? zero. A 1500 kg car traveling at 90.0 km/h east collides with a 1000 kgcar traveling at 60.0 km/h south. The two cars stick togetherafter the collision. What is the direction of the motion ofthe cars after the collision? What is the speed of thecars after the collision? split the velocities into components using conservation principle find out the final velocity anddirection of motion. A 500 kg sack of coal is dropped on a 2000 kg railroad flatcarwhich was initially moving at 3 m/s. After the sack rests onthe flatcar, the speed of the flatcar is what? 2000*3=2500*x x=12/5=2.4m/sec