Jogging Jake runs along the top of a moving flatcar in the direction of motion of the flatcar. If he runs in the opposite direction, the combined momentum of Jake and the flatcar relative to an observer at rest will be
A) more.
B) the same.
C) less.
Answer: C
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Satellite Motion: The International Space Station is orbiting at an altitude of about 370 km above the earth's surface. The mass of the earth is 5.97 × 1024 kg, the radius of the earth is 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2. Assume a circular orbit.(a) What is the period of the International Space Station's orbit?(b) What is the speed of the International Space Station in its orbit?
What will be an ideal response?
A heavy ball hangs by a string, with a second string attached to its bottom. A slow pull on the bottom string breaks the
A) top string. B) bottom string. C) top or bottom string equally.
Contrast the densities and compositions of the four Galilean moons
What will be an ideal response?
An object weighing 44.1 N hangs from a vertical massless ideal spring
When set in vertical motion, the object obeys the equation y(t) = (6.20 cm) cos[(2.74 rad/s)t - 1.40]. (a) Find the time for this object to vibrate one complete cycle. (b) What are the maximum speed and maximum acceleration of the object. (c) What is the TOTAL distance the object moves through in one cycle. (d) Find the maximum kinetic energy of the object. (e) What is the spring constant of the spring.