Kinematics and Projectiles
Freefall
What is an object whose only force acting on it is gravity?
The property of matter that determines an object's persistence to continue with the same motion.
What is Inertia?
Unit of momentum
What is kgm/s?
Unit of work
What is joules (J)?
ac
What is centripetal acceleration?
Initital Velocity of an object dropped from a height of 10m.
What is zero?
Force due to gravity on a 2kg object
What is 19.6N?
Unit of impulse
What is kgm/s?
Unit of power
What is watts (W)?
Fc
What is centripetal force?
The trajectory of any projectile.
What is parabolic?
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=W/t or P=Fv ?
Formula for centripetal force
What is Fc=mv2/r?
The time it takes for a dropped object to reach a velocity of 29.4 m/s
What is 3 seconds?
The coefficient of static friction on a 6kg block sitting at rest on a 21.80 incline.
What is 0.4?
Change in momentum of a 1.0 kg ball travelling to the right with a speed of 8 m/s after it bounces off a wall and has a speed of 6 m/s to the left
What is 14 m/s to the left?
Hooke's Law
What is F=-kx+F0?
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?
The distance a car travels to stop from traveling 25 m/s if the reaction time for braking is 0.25 seconds and the acceleration is 2 m/s2.
What is 165.25m?
The tension in the elevator cable if the 4000kg elevator is traveling up with an acceleration of 4 m/s2
What is 55200N?
Force acting on a 1.0 kg ball travelling to the right with a speed of 8 m/s when it bounces off a wall (time of 0.10 s) and then has a speed of 6 m/s to the left
What is 140 N?
The formula for elastic potential energy
What is Ue=1/2kx2?
An object can accelerate but have constant speed
What is velocity has both speed and direction?