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Physics 11.2B > Gabriel Barillas, John Batch & Ana Lucia Jaime's Deck > Flashcards

Gabriel Barillas, John Batch & Ana Lucia Jaime's Deck Flashcards

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1
Q

5 - “Remember” - Definitions

A

.

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2
Q

What is definition of work?

A

Is the energy transferred to or from an object via the application of force along a displacement

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3
Q

What is a reference level?

A

The position where GPE is defined to be zero

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4
Q

What is the definition of motion?

A

The action or process of moving or being moved.

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5
Q

What is the definition of energy?

A

Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

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6
Q

What is the definition of gravitation?

A

The force that attracts a body toward the center of the earth, or toward any other physical body having mass.

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7
Q

5 - “Identify” - Questions

A

.

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8
Q

What is the equation for kinetic energy?

A

1/2mv^2

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9
Q

What is the equation of moment inertia?

A

I = mr^2

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10
Q

What is the equation of speed?

A

S = d/t

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11
Q

What is the equation of force?

A

F = m * a

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12
Q

Which defines the lever arm?

A

The perpendicular distance from the axis of rotation to the point where the force is exerted.

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13
Q

5 - “Calculation Questions”

A

.

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14
Q

An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.

A

s = ut + 1/2 at ^2

s = 1/2 at²

s=1/2(3.20)(32.8)²

s= 1720 m

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15
Q

What is the gravitational potential energy of a 3.0-kg rock that is 12.4 m above the ground?

A

PE = 3.0(-9.8)(-12.4)

PE = 360 J

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16
Q

A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.

A

u=0

t=5.21

s=110m

we know s=1/2at²

110=1/2 a(5.21)²

220/5.21²=a

a = 8.10 m/s

17
Q

Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 2.60 seconds, what will be his final velocity and how far will he fall?

A

= 9.8 m/s² × 2.60 s + 0 m/s

= 25.48 m/s + 0 m/s vf = 25.5 m/s

d = (Vf + Vi) / 2 × t

= 25.48 m/s / 2 × 2.60 s

d = 33.1 m

18
Q

A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car and the distance traveled.

A

u=18.5 m/s
v=46.1 m/s
t=2.47 secs

a=(v-u)/t
= (46.1-18.5)/ 2.47

a = 11.2 m/s

d = 79.8 m

19
Q

5 - “Understand” Questions

A

.

20
Q

What is the ability of an object to produce a change in itself or the world around it?

A

Energy

21
Q

Which energy is calculated by finding the product of one-half the mass and the square of the velocity?

A

Translational kinetic energy

22
Q

Which energy is best associated with a stretched rubber band?

A

Elastic potential energy

23
Q

Which is the rate at which energy is transformed?

A

Power

24
Q

Which describes the transformation of energy as a ball is thrown up into the air and reaches its maximum height?

A

Kinetic energy changes to gravitational potential energy.

25
Q

Which describes the process of doing work?

A

When work is done on the system, then W is positive, and the energy of the system increases.

26
Q

Why would a star do no work on a planet that travels in uniform circular motion around it?

A

There is no force component parallel to the motion.

27
Q

When is work done on a system?

A

When a force is applied through a displacement.

28
Q

Which is a measure of how effectively a force causes rotation?

A

Torque

29
Q

Which is the resistance to rotation?

A

Moment of inertia

30
Q

Newton’s second law for rotational motion states that angular acceleration is:

A

Directly proportional to the net torque and inversely proportional to the moment of inertia.

31
Q

According to Kepler’s first law, what do the orbits of the planets look like?

A

Ellipses

32
Q

According to Kepler’s first law, what is at the focus of a planet’s orbit?

A

Sun

33
Q

Which two factors is the gravitational force between two objects dependent upon?

A

Mass, distance

34
Q

Which is a contact force?

A

Friction

Physics 11.2B (6 decks)

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