(d) Calculate the force exerted by the boxing glove on the opponent's face. Consider the relative directions of F and d when determining the sign of the force. Consider the direction of vo to be positive. Enter to 3 significant figures Fface N (Include sign) (e) Name the theorem or physics principle you used to calculate part (c). O Newton's Second Law O Work-Energy Theorem O Superposition of forces (f) Calculate the force exerted by an identical blow on the face in the glory days when no gloves were used and the knuckles and face would compress only 2 cm. Consider the relative directions of F and d when determining the sign of the force. Consider the direction of vo to be positive. Enter to 3 significant figures Fface ✔N (Include sign)

(d) Calculate the force exerted by the boxing glove on the opponent's face. Consider the relative directions of F and d when determining the sign of the force. Consider the direction of vo to be positive. Enter to 3 significant figures Fface N (Include sign) (e) Name the theorem or physics principle you used to calculate part (c). O Newton's Second Law O Work-Energy Theorem O Superposition of forces (f) Calculate the force exerted by an identical blow on the face in the glory days when no gloves were used and the knuckles and face would compress only 2 cm. Consider the relative directions of F and d when determining the sign of the force. Consider the direction of vo to be positive. Enter to 3 significant figures Fface ✔N (Include sign)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest. 

Question

Please solve d, e and f

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
directions of F and d when determining the sign of the force. Consider the direction of vo to be
positive. Use the glove as the system for this part.
Enter to 3 significant figures
F glove
=
✔N (Include sign)
O Newton's Second Law
F₁
glove
Vo
N (Include sign)
(d) Calculate the force exerted by the boxing glove on the opponent's face. Consider the relative
directions of F and d when determining the sign of the force. Consider the direction of vo to be
positive.
Enter to 3 significant figures
Fface=
✔N (Include sign)
Fface
d
(e) Name the theorem or physics principle you used to calculate part (c).
O Work-Energy Theorem
O Superposition of forces
(f) Calculate the force exerted by an identical blow on the face in the glory days when no gloves were
used and the knuckles and face would compress only 2 cm. Consider the relative directions of F and
d when determining the sign of the force. Consider the direction of vo to be positive.
Enter to 3 significant figures
Fface=

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