A soccer ball (mass = 0.43 kg) is moving at a speed of 20 m/s when it is kicked with a force of 300 N resulting in it going in the opposite direction with the same speed as before. What is the magnitude of the impulse delivered to the ball?
a. 0, because the before and after momenta cancel each other.
b. 8.6 kg•m/s
c. 17 kg•m/s
d. 2600 kg•m/s
C
You might also like to view...
The solar neutrino experiments detect about twice as many neutrinos as theory predicts should be detected
a. True b. False Indicate whether the statement is true or false
A catapult is tested by Roman legionnaires. They tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): Range = 0.20 km; angle of launch = ?/4; landing height = launch height
What is the initial velocity of launch of the boulders if air resistance is negligible? A) 44 m/s B) 1.4 m/s C) 22 m/s D) 0.69 m/s
A radiation pyrometer is a device that uses radiant heat to measure the temperature of a surface. Assume that a pyrometer has a surface area of 5 cm^2 and is at a temperature of 20ºC when directed towards a furnace opening having a temperature of 1100ºC. Estimate the net rate of heat transfer towards the pyrometer if black body radiation is assumed.
What will be an ideal response?
Spaceman Speff orbits spherical asteroid X with his spaceship. To remain in a circular orbit at 421 km from the asteroid's center, he should maintain a speed of What is the mass of planet X? (G = 6.67 × 10-11 N ? m2/kg2)
A) 4.0 × 1019 kg B) 5.1 × 1017 kg C) 4.0 × 1016 kg D) 5.1 × 1014 kg