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25 Cards in this Set

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  • Back
Momentum (p)=
mv
What is an elastic collission
1) Momentum is conserved
2) KE is conserverd
What is an inelastic collission
1) Masses Add
2) Momentum is conserved
3) Ke is not conserved
Gravitational Force is due to Centripetal Force
G.Mm/r^2 = mv^2/r
A circular plate will experience _________ expansion through out
uniform
Masses released simultaneously from rest have the same acceleration or they fall at the ______ rate
same
Period of a Spring
T= 2pi √m / k
Frequency of a Spring
1/T
Equilibrium position of a spring means _____ Elastic PE is available at that point
no
Accuracy is the _____ no of digits
smallest compared to the values given
If speed is constant acceleration =
0
For a pulley system acceleration and tension are.......
constant
Weight is a force that the _____ exerts on a body
earth
Objects closer to the centre of rotation have:
1) greater angular velocity
2) greater KE
3) greater acceleration
Objects further from the center of rotation have:
1) greater moment of inertia
2) greater linear velocity
3) greater angular momentum
Negative velocity means displacement is......
decreasing
Planets with lower orbits or smaller radii move
faster
s is (in terms of kinematic eqns)
displacement
Action- Reaction force act on
different objects
An object does not have to be at_____ if net force is 0
rest
Horizontal motion does not depend on (in terms of a trajectory) _____
gravity
Any two objects in the universe exert an ______ force on each other
attractive
Essentials for Circular Motion
1) Speed- constant
2) Velocity- magnitude constant direction changing
3) Acceleration- same as velocity
Magnitude does not relate to
sign
Turning Force
fd or fdsin0f