Physics Review QuestionUnit:
MechanicsYear:
1989 Question#:
17Question:
What is the magnitude of the velocity of a 25-kilogram mass that is moving with a
momentum of 100. kilogram-meters per second?(1
) 0.25 m/s(2
) 2500 m/s(3
) 40. m/s(4
) 4.0 m/sWhat is this question really asking?
Explanation by: Anna R [ Return to question menu
]Answer 1
0.25 m/s INCORRECT The formula for momentum is p=mv (p=momentum), ....try it again. return to top
Answer 2
2500 m/s INCORRECT The formula for momentum is p=mv (p=momentum), ....try it again. return to top
Answer 3
40. m/s INCORRECT The formula for momentum is p=mv (p=momentum), ....try it again. return to top
Answer 4
4.0 m/s CORRECT The formula for momentum is p=mv (p=momentum), ....so p=mv 100kgm/s=25kg(v) v= 4m/s. return to top
What's this question really asking?
How do you find velocity when you have the momentum and the mass of an object? return to top |

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