Forces
A diagram of all the forces acting on an object
What is a Free Body Diagram?
The distance a ball travels in 4.5 seconds provided it is kicked at 10m/s
What is 45 m?
Although this force does not actually exist, it is the sum of forces that cause an object to rotate in circular motion.
What is centripetal force?
The value of this is equal to mgΔh
This is the unit of momentum
What is kgm/s? (also acceptable: Ns)
The only force on an object in free fall in a vacuum
What is gravitational force?
This 17th-18th century scientist was the creator of the 3 basic laws of motion
Who is Newton?
Linear velocity is not constant in circular motion because of this fact.
What is the fact that acceleration changes the direction of motion?
The product of the displacement and force, or the sum of the change in energy in an object
What is work?
This principle states that the momentum before a collision is equal to the momentum after a collision.
What is the conservation of momentum?
What is Newton's Third Law
What is 0.42?
The symbol alpha (α) is used for this rotational measurement
What is angular acceleration?
This equation: W/t, represents this measurement of how quickly work is being done
What is power?
Uses the equation: m1v1i+m2v2i=m1v1f+m2v2f
What is elastic collisions?
This represents the force needed to stretch/compress a string divided by the change in length
What is the spring constant (k)?
The distance travelled by a ball rolled at 2 m/s off a table 1.5 m off the ground.
What is 1.1 meters?
Torque is most significant at this angle relative to the axis of pivot
What is 90°? (also acceptable: perpendicular)
When ΔPE does not equal ΔKE, the energy is lost to this
What is heat energy? (also acceptable: internal energy, thermal energy)
Uses the equation: m1v1i+m2v2i=vf(m1+m2)
What is inelastic collision?
This value determines the fraction of the normal force that calculates the frictional force
What is the coefficient of friction?
An object is thrown upward off a cliff with an initial velocity of 10 m/s. This is the displacement after 6 seconds of the ball in air.
What is 117 meters downward? [Make sure you included direction or else the answer is invalid]
This is a case in which a satellite is orbiting around the earth and the period the satellite takes is one day
What is geosynchronous orbit?
What is 12.2 m/s?
The final speed and direction of a single body formed from the collision of a truck of mass 5000 kg traveling 10 m/s north and a car of mass 1000 kg traveling 50 m/s east
What is 167 m/s northeast?