Flashcards

Physics

Jude Ashoor Inglês 17 flashcards

Flashcards do conjunto (17)

1Motion is relativeEverything is moving even things that appear to be at rest
Moving relative to the sun and stars
2SpeedSpeed = Distance.
______________
Time
M/s
3AccelerationRate of change in velocity over time
Vf-Vi
_______
T
a=m/s^2
4AccelerationOccurs when
•an objects speeds up or slows down (speed changes)
•when an objects direction changes
•one of the following ^ or both
•a car moving in a curve path is accelerating ( direction is changing)
5VelocityLike speed but direction is added (north-west-east-south)
Velocity =m/s
•Average velocity =vi+vf / 2
6Finding d in an incline plane (how far)d= 1/2 •a•t^2
7Finding d is a free fall motionFree Fall: only for acting on a falling object is g
d=1/2 • g• t^2
8Acceleration of a straight lineConstant v = 0 a
9Instantaneous speedSpeed in an instant
In that particular moment
Speedometer
10Average speedAvg. speed =Total distance/total time
11VelocityWhen a ball is thrown upward its velocity is decreasing.. It is decelerating
12VelocityWhen an object is thrown downwards its velocity is increasing it is accelerating
13VelocityIncline plane (how fast?) v=at
Free fall (how fast?)
v = gt
14How long will it take (jumping)t = square root of 2d / g
15Linear motionMotion in a straight line
16Label1. _________ object at rest
2./ object moving with a constant speed
3. ) curve up object is accelerating
17AccelerationIf an object moves with constant ' a '
Its velocity must be constant with change by the same amount each second