You are standing on a saucer-shaped sled at rest in the middle of a frictionless ice rink. Your lab partner throws you a heavy Frisbee You take different actions in successive experimental trials. Rank the following situations according to your final speed from largest to smallest. If your final speed is the same in two cases, give them equal rank. (a) You catch the Frisbee and hold onto it. (b) You catch the Frisbee and throw it back to your partner. (c) You bobble the catch, just touching the Frisbee so that it continues in its original direction more slowly. (d) You catch the Frisbee and throw it so that it moves vertically upward above your head. (e) You catch the Frisbee and set it down so that it remains at rest on the ice.
You are standing on a saucer-shaped sled at rest in the middle of a frictionless ice rink. Your lab partner throws you a heavy Frisbee You take different actions in successive experimental trials. Rank the following situations according to your final speed from largest to smallest. If your final speed is the same in two cases, give them equal rank. (a) You catch the Frisbee and hold onto it. (b) You catch the Frisbee and throw it back to your partner. (c) You bobble the catch, just touching the Frisbee so that it continues in its original direction more slowly. (d) You catch the Frisbee and throw it so that it moves vertically upward above your head. (e) You catch the Frisbee and set it down so that it remains at rest on the ice.
Solution Summary: The author explains how to determine the order of rank of the given situation according to final speed from largest to smallest.
You are standing on a saucer-shaped sled at rest in the middle of a frictionless ice rink. Your lab partner throws you a heavy Frisbee You take different actions in successive experimental trials. Rank the following situations according to your final speed from largest to smallest. If your final speed is the same in two cases, give them equal rank. (a) You catch the Frisbee and hold onto it. (b) You catch the Frisbee and throw it back to your partner. (c) You bobble the catch, just touching the Frisbee so that it continues in its original direction more slowly. (d) You catch the Frisbee and throw it so that it moves vertically upward above your head. (e) You catch the Frisbee and set it down so that it remains at rest on the ice.
When some cars are advertised, they quote a "stopping distance" from some speed to zero.
The mass of the car and this value of "some speed" give a measure of initial motion, but we aren't necessarily told the mass.
Using the stopping distance, one can directly calculate what physical quantity provided by the brakes?
A
impulse
B
chemical potential energy
C
power
D
kinetic energy
E
force
F
velocity
G
work
H
acceleration
I
mass
The boy in the figure here is initially seated on the top of a hemispherical ice mound of radius R = 13.7 m. He begins to slide down the
ice, with a negligible initial speed. Approximate the ice as being frictionless. At what height does the boy lose contact with the ice?
R
Number
i
Unit
Boxing gloves are padded to lessen the force of a blow. The glove and face compress 7.50 cm during
a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s.
Think & Prepare
1. Make note of what's given and what's unknown. Relate known quantities to symbols.
2. Draw a labeled sketch if possible.
3. Identify the physics principle and approach. Write down relevant equations symbolically. Simplify if
possible.
4. Insert numerical quantities to solve for unknowns.
5. Does the answer make sense?
(a) Calculate the change in kinetic energy of the glove and arm.
Enter to 3 significant figures
AKE=
J
Note: AKE = KE final-KE initial
(b) Where does this energy go?
O into doing work against the force exerted by the face against the glove
O into doing work against gravity
O into the potential energy of the face
O into the potential energy of the glove and arm
(c) Calculate the force exerted on the boxing glove by the opponent's face. Consider the relative…
Chapter 9 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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