Kinematics and torque
vi
What is the symbol for initial velocity?
Freefall
What is an object where the only force acting is due to gravity?
Unit of momentum
What is kgms-1?
Unit of work
What is joules (J)?
ac
What is centripetal acceleration?
Units of torque
What is Nm?
Force due to gravity on a 2kg object
What is 19.6N?
Unit of impulse
What is kgms-1?
Unit of power
What is watts (W)?
Fc
What is centripetal force?
Initial velocity of an object dropped from a height of 10m
What is zero?
Acceleration due to gravity on a 2kg object
What is -9.8 ms-2?
Formula for impulse
What is {delta}p=F{delta)t?
Formula for power
What is P=E/t
Formula for centripetal force
What is Fc=mv2/r?
State of an object that is not accelerating, either linearly or rotationally
What is equilibrium?
Speed of an object that has fallen 10 m after being dropped
What is 14 ms-1?
Change in momentum of a 1.0 kg ball travelling to the right with a speed of 8 ms-1 after it bounces off a wall and has a speed of 6 ms-1 to the left
What is 14 ms-1 to the left?
Hooke's Law
What is F=-kx?
Centripetal force to keep a cyclist of mass 90kg riding around a circular bend of radius 7.0 m at a constant speed of 10 ms-1.
What is 1300N?
Conditions for equilibrium
What is no net force and no net torque?
Time for a dropped object to fall 10 m?
What is 1.4 s?
Force acting on a 1.0 kg ball travelling to the right with a speed of 8 ms-1 when it bounces off a wall (time of 0.10 s) and then has a speed of 6 ms-1 to the left
What is 140 N?
Ep=1/2kx2
What is the formula for elastic potential energy?
An object can accelerate but have constant speed
What is velocity has both speed and direction?