Section 1

Preview this deck

Delta is a symbol for what?

Front

Star 0%
Star 0%
Star 0%
Star 0%
Star 0%

0.0

0 reviews

5
0
4
0
3
0
2
0
1
0

Active users

0

All-time users

0

Favorites

0

Last updated

2 years ago

Date created

Mar 1, 2020

Cards (67)

Section 1

(50 cards)

Delta is a symbol for what?

Front

change

Back

a ddolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h?

Front

1.1 km

Back

When velocity is positive and acceleration is negative, what happen's to the objects motion?

Front

the object slows down

Back

freefalls acceleration is directed

Front

downward toward the center of the earth

Back

which would fall with greater acceleration in a vacuum, a leaf or a stone?

Front

they would accelerate at the same rate

Back

average velocity

Front

the total displacement divided by the time interval during which the displacement occurred. Vavg=x/t

Back

projectiles follow

Front

parabolic trajectories

Back

are displacement and distance the same? compare.

Front

no displacement: change in position, vector quantity (has magnitude and direction) distance: path length, scalar quantity (magnitude but no direction)

Back

displacement with constant acceleration

Front

Δx=1/2(vi+vf)Δt

Back

projectile motion

Front

classic form of 2-dimensional motion free-fall with an initial horizontal velocity

Back

the range is ____ with air resistance than the range w/o air resistance

Front

less

Back

displacement formula

Front

Δx=xf-xi

Back

use components to analyze objects launched at an angle

Front

Vxi= vi(costheta) vyi=vi(sintheta)

Back

a marble accelerates from rest at a constant rate and travels for a total displacement of 44 m in 20.0 s. What is teh average velocity of the marble?

Front

2.2 m/s

Back

vertical motion of a projectile that falls from rest

Front

vy,f =gt vy^2,f =2gy y=1/2gt^2

Back

velocity with constant acceleration

Front

vf=vi +aΔt

Back

how do yoyu find velcoity vs time from a position vs time graph

Front

slope

Back

a tourist accidentally drops a camera from a 40.0 m high bridge. If air resistance is disregarded, what is the speed of teh camera as it hits the water?

Front

-28.0 m/s

Back

a cheetah can maintain its maximum speed of 27.8 m/s for only 30.0 s. What is the minimum distance a gazelle running at 22.2 m/s must be ahead of the cheetah to have a chance of escaping?

Front

168 m

Back

velocity measurements depend on the

Front

frame of reference of the observer

Back

how do you find acceleration vs time from a velocity vs time graph?

Front

slope

Back

final velocity after any displacement

Front

vf^2 =vi^2 + 2aΔx

Back

one dimensional motion is

Front

the simplest form of motion

Back

force

Front

the cause of an acceleration, or the change in an objects velocity

Back

velocity measurements differ in differen

Front

frames of references

Back

how do you add vectors?

Front

tip to tail method

Back

instantaneous velocity

Front

the velocity of an object at some instant (or specific point in its path)

Back

displacement

Front

the change in position of an object

Back

acceleration due to gravity is also called

Front

free-fall acceleration

Back

horizntal motion of a projectile

Front

vx= constant x= Vx(t)

Back

a toy car is given an initial velocity of 5.0 m/s and experiences a constant acc. of 2.0 m/s^2. What is the final velocity after 6.0 s?

Front

17 m/s

Back

acceleration is

Front

the rate of change of velocity

Back

range is height is

Front

x-axis y-axis

Back

projectiles

Front

objects that are thrown or launchedd in the air and are subject to gravity

Back

average speed

Front

distance traveled over time elapsed s=d/t

Back

the height is ____ with air resistance than the height w/o air resistance

Front

less

Back

the baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball's path does it experience zero velocity and non-zero acceleration at the same time?

Front

at the top of its trajectory

Back

a rock is thrown from the top of a cliff with an initial speed of 12 m/s. If the rock hits the fround after 2.0 s, what is the height of the cliff?

Front

-44 m

Back

slope

Front

rise over run y2-y1/x2-x1

Back

frame of reference

Front

a coordinate system for specifying the precise location of objects in space (x,y,z axis)

Back

displacement with constant acceleration 2

Front

Δx=viΔt +1/2a(Δt) squared

Back

which of the following is a value for acceleration of oobjects in free fall? A. 9.81 m/s^2 B. -9.80 m/s^2 C. -9.81 m/s^2 D. 9.80 m/s^2

Front

C.

Back

determining resultant magnitude and direction

Front

pythag theorem for angle tangent function to find direction

Back

motion takes

Front

place over time and depends upon the frame of reference

Back

a juggler throws a bowling pin into the air with an initial velocity. Another juggler drops a pin at the same instant. Compare the accelerations of the two pins while they are in the air.

Front

the only force acting on each pin is gravity. Therefore, the acceleration on both pins is the acceleration due to gravity, or 9.8 m/s2 towards the earth. Even though one of the pins is being thrown up, once released, the acceleration is still 9.8 m/s2 towards the earth.Each pin has the same acceleration.

Back

human reaction time is usually about 0.20s. If your lab partner holds a ruler between your finger and thumb an dreleases it without warning, how far can you expect the ruler to fall before you catch it?

Front

at least -0.196 m

Back

freefall

Front

motion of an object falling with a constant acceleration symbol: g vector quantity

Back

resultant vectors

Front

are drawn from the tail of the 1st vector t the tip of the last vector

Back

if a baseball has a zero velocity at some instant, is the acceleration of the baseball necessarily zero at that instant?

Front

If an object has zero velocity at some instant, its acceleration doesn't have to be zero. Acceleration is a measure of the change in velocity over time. An object could be changing its direction and in doing so its velocity would instantaneously go to zero as it went from positive to negative or from negative to positive. If the velocity is changing it is accelerating. Therefore, it can be accelerating while its velocity is zero. An example would be a ball tied to an elastic. At first it is slowing down while traveling in the positive direction until it reaches zero velocity and then speeding up in the negative direction, all the while traveling with constant acceleration in the negative direction.

Back

how do you find position vs time from an acceleration vs time graph?

Front

area

Back

Section 2

(17 cards)

If equal forces are applied to two objects of diff masses, the object with greater mass will experience a smaller acceleration and object with less mass will experience a greater acceleration

Front

Back

a change in an objects _____ is still considered acceleration

Front

direction

Back

force diagram

Front

a diagram of the objects involved in a situation and the forces exerted on the oobjects

Back

force can cause objects to

Front

start moving stop moving change direction

Back

net external force

Front

the total force resulting from a combination of external forces on an object; sometimes called the resultant forces

Back

Newton's second law

Front

the acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the object's mass

Back

an object is shown to be at rest on a velocity vs time graph whenq

Front

the graph crosses the x-axis indicating zero velocity

Back

newtons first law

Front

an object at rest remains at rest, and object in motion continues in motion with constant velocity unless the object experiences a net external force. often referred to as law of inertia

Back

inertia

Front

the tendency of an object to maintain its state of motion

Back

an object accelerates when

Front

it changes velocity

Back

_____ is a measurement of inertia

Front

mass

Back

force affects

Front

motion of objects

Back

contact force

Front

force that arises from the physical contact of two objects

Back

equilibrium

Front

the state in which there is no change in a bodys motion.

Back

forces can act through

Front

contact or at a distance

Back

field force

Front

force that can exist between objects, even in the absence of physical contact between the pbjects

Back

free body diagram

Front

shows only the forces acting on the object of interest

Back