Many people have some sense for the SI units describing mass, length, and time. one kilogram is roughly the mass of a typical sports water bottle (when full) one meter is roughly the height of a kitchen counter one second is a typical time interval between heartbeats (when at rest) But the momentum unit we just learned—the "kilogram meter per second"—is another matter! How many kg · m/s might describe the following everyday phenomena? (Recall that momentum equals the product of mass and velocity.) a 0.05 kg (50-gram) tennis ball crossing the court at 20 m/s (about 45 mph) _____________ kg · m/s a 50 kg (110-pound) teenager jogging at 2 m/s about 4 1 2 mph . _______________kg · m/s a two-ton SUV (2,000 kg) following a dirt road at 5 m/s (about 11 mph). ________________kg · m/s
Many people have some sense for the SI units describing mass, length, and time. one kilogram is roughly the mass of a typical sports water bottle (when full) one meter is roughly the height of a kitchen counter one second is a typical time interval between heartbeats (when at rest) But the momentum unit we just learned—the "kilogram meter per second"—is another matter! How many kg · m/s might describe the following everyday phenomena? (Recall that momentum equals the product of mass and velocity.) a 0.05 kg (50-gram) tennis ball crossing the court at 20 m/s (about 45 mph) _____________ kg · m/s a 50 kg (110-pound) teenager jogging at 2 m/s about 4 1 2 mph . _______________kg · m/s a two-ton SUV (2,000 kg) following a dirt road at 5 m/s (about 11 mph). ________________kg · m/s
Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter14: Special Theory Of Relativity
Section: Chapter Questions
Problem 14.39P
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Question
Many people have some sense for the SI units describing mass, length, and time.
- one kilogram is roughly the mass of a typical sports water bottle (when full)
- one meter is roughly the height of a kitchen counter
- one second is a typical time interval between heartbeats (when at rest)
But the momentum unit we just learned—the "kilogram meter per second"—is another matter!
How many kg · m/s might describe the following everyday phenomena? (Recall that momentum equals the product of mass and velocity.)
a 0.05 kg (50-gram) tennis ball crossing the court at 20 m/s (about 45 mph)
_____________ kg · m/s
a 50 kg (110-pound) teenager jogging at 2 m/s
about
4
mph
.
| 1 |
| 2 |
_______________kg · m/s
a two-ton SUV (2,000 kg) following a dirt road at 5 m/s (about 11 mph).
________________kg · m/s
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