Concepts
If an object is sitting on an object what forces will always be present in the free body diagram.
Fn = Normal Force
A force of 2.0 N is applied along the 𝑥 axis to a mass of 500 g. Calculate the acceleration along the 𝑥 axis
ax = Fx / m = 2.0N /0.5kg = 4 m/s^2
What is the term for the force of gravity acting on the object ?
Weight
a rope with a tension T has a bucket with a mass (m) hanging from the end of it. If m=11kg and the tension is 160N. What is the value and direction of the acceleration?
4.745 m/s ^2
upward
What is my major ?
Animal and Dairy Sciences
What is the difference between static and kinetic friction ?
Static = not moving
Kinetic = Moving
According to a simplified model of a mammalian heart, at each pulse approximately 20 g of blood is accelerated from 0.21 m/s to 0.34 m/s during a period of 0.12 s. What is the magnitude of the force exerted by the heart muscle?
2.2*10^-2 N
What is Newton's First Law?
Every object continues in its state of rest, or of uniform velocity in a straight line, as long as no net force acts on it
A box with M1=21.0kg rests on a table. The box has an additional box M2 = 10kg placed on top of it. Determine the Normal Force placed on M1 by the table.
303.8 N
What are my plans after college ?
To Attend Medical School
A 6 kg bowling ball hits a 1 kg bowling pin. If the force of the bowling ball on the pin is 120 N, what is the force of the pin on the ball?
120N
A 1500 kg car accelerates from 30 km/hr to 60 km/hr in 6 s. What is the average force on the car during this time?
What is Newton's Second Law?
Relates acceleration to force
F=ma
A crate is sitting in the back of a truck. The truck begins to accelerate, and the crate does not slide out the back because of static friction between the crate and the truck. The coefficient of static friction is 0.72. How fast can the driver accelerate before the crate begins to slide out of the truck ?
7.056m/s^2
Where am I from ?
Hanceville Alabama
An elevator is moving upward toward the top of a building. While it is slowing to a stop, the effective weight of people riding the elevator is -------their normal weight.
Less Than
A 0.140-kg baseball traveling 39.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 15.0 cm.
5070 m/s
What is the Law associated with Newton's First Law ?
The Law Of Inertia
A box sliding across the floor with an initial velocity of 3.9m/s and a friction force causes it to slow down. The kinetic friction coefficient is 0.13. How far will it go before it stops ?
5.97m
What is happening in my life this Summer ?
THINK BIG
I am getting married.
A chandelier hangs from the ceiling. A chain hanging from the ceiling supports the chandelier’s weight. What is the equal and opposite reaction of the chain pulling up on the chandelier?
Chandelier pulling down on the chain.
A rock of mass m falls from the top of a cliff and it experiences a significant amount of air drag as it falls. The rock has a mass of 2.6 kg, and the cliff is 55 m tall. If it is going 26 m/s when it hits the ground, what was the average force of air resistance?
Fa =9.5N
What is Newton's Third Law of Motion ?
Whenever one object exerts a force on a second object, the second exerts an equal force in the opposite direction on the first
Block A sits on a table and a string runs from it over a pulley to block B with mass 2.1kg. The coefficient of static friction between block A and the table is 0.36 If the two bocks are not moving what is the minimum mass for Block A ?
5.833kg
What is something I love to do outside of school ?
Cook and try new foods