Ph 101: Fundamentals of Physics 3
Chapter 2 Worksheet (Newton’s 1st Law & Forces) 10/5/2004
Aristotle vs Galileo:
1) When you are traveling along in an automobile at freeway speed, what happens when you let off on the accelerator?
a) Describe how Aristotle would interpret this observation.
b) Describe how Galileo would interpret this observation.
2) When a high quality arrow is shot from a bow, it travels through the air at a nearly constant rate of motion until it hits its target.
a) Describe how Aristotle would interpret this observation.
b) Describe how Galileo would interpret this observation.
3) Consider a 0.1 N soda can tossed into the air. Neglect air resistance.
a) Draw a free body diagram for the can (while it is in the air)
b) Determine the Net Force acting on the can (while it is in the air):
c) Based on your answer in (b), would you expect the can to experience a change in motion? If so, in which direction?
4) Consider, a 2.0 N sea turtle floating in the ocean.
a) Draw a free body diagram for the floating turtle.
b) Determine the Net Force acting on the floating turtle.
c) Based on your answer in (b), would you expect the turtle to experience a change in motion? If so, in which direction?
5) Consider, a 5.0 N rock laying by the side of the road.
a) Draw a free body diagram for the rock.
b) Determine the Net Force acting on the rock.
c) Based on your answer in (b), would you expect the rock to experience a change in motion? If so, in which direction?
6) Consider a 5.0 N rock underneath a 10,000 N parked car.
a) Draw a free body diagram for the rock.
b) Determine the Net Force acting on the rock.
c) Based on your answer in (b), would you expect the rock to experience a change in motion? If so, in which direction?