Question1
What pairs of forces act in the following situations?
a. a pitcher throws a baseball.
b. a batter hits a baseball out of the park.
c. a leaf falls to the ground.
d. the Moon orbits Earth.
e. you sit in a chair.
Question2
A camel sets out to cross the desert that is 29.3 km wide in the north-south direction. The camel walks at the uniform speed of 2.13 km/hr all along a straight line in the direction 50.4? north of East. How long will it take the camel to cross the desert? (Reply in units of hr) compute the camel's eastward displacement while he crosses the desert. (Respond in units of km)