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Physics (S1) FINAL STUDY GUIDE

Terms in this set (20)

spring stretch equation that is proportional to force
F=kx
what is the difference between velocity and acceleration
velocity=change in position over time, acceleration=rate with which velocity of the object changes during motion
The momentum change of an object is equal to the
impulse acting on the object
the slope of a position versus time graph gives
the velocity
the slope of a velocity versus time graph gives
the acceleration
Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration.
the acceleration is equal to zero
In an inelastic collision involving an isolated system, the final momentum is
exactly the same as the initial momentum
Suppose that a car traveling to the west (-x direction) begins to slow down as it approaches a traffic light. Which of the following statements about its acceleration is correct?
it's acceleration is positive
T or F: in order to get an object moving, you must push harder on it than it pushes back on you
false
a rubber ball and a lamp of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change?
the ball
In a collision between A and B, momentum gained by A=
momentum lost by B
constant velocity=
position time graph is straight
accelerated motion=
position time graph is a curve
impulse=
change in momentum
force problems:
1) free body diagram 2) a=Fnet/m 3) solve
In a closed system (no external forces)...
momentum before=momentum after
how does vehicle size affect the "impact" on a passenger if there is a collision
more mass means less change in velocity since p=mv
x=vt+b
v=velocity, b= start position
What is a vector quantity?
acceleration
greater slope=
greater velocity
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