The orbital plane of Earth about the Sun is called
the
a)celestial plane.
b)geocentric plane.
c)ecliptic plane.
d)sidereal plane.
Question 2
A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40 angle to the ground. The magnitude of the horizontal impulse the catapult receives from the rock is
a. 5.1 104 N s.
b. 6.1 104 N s.
c. 8.0 104 N s.
d. 5.0 105 N s.
e. 6.0 105 N s.