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Give me 3 types of Field Forces.
What are Gravity, Electrostatic, Magnetic, or Nuclear forces?
The standard units used to measure time and velocity.
What is seconds (s) and meters per second (m/s)?
The unit of measure for work, which is equal to one Newton-meter.
What is the Joule(J) ?
The single force that is the VECTOR SUM of all the individual forces acting on an object.
What are Net Forces?
Contact and Non-contact (Field) are two general types of this physical vector quantity.
What are Forces?
What does the variable Xf represent in horizontal and vertical motion?
What is final position?
The standard units used to measure acceleration (a).
What is m/s2 (meters per second squared)?
The energy an object has due to its motion.
What is Kinetic Energy?
The unit of measurement for Force (F) in the metric system.
What is Newton (N)?
This law is often called the Law of Inertia, describing an objects tendency to resist changes in its motion.
What is Newton's First Law of Motion?
The shape of the path taken by a projectile in the air.
What is a parabola?
The slope of a position vs. time graph.
What is velocity?
The rate at which work is done, measured in Watts.
What is Power?
The fundamental force that acts between any two objects with mass.
What is Gravity, What is Gravitational Force?
A rocket pushes hot exhaust gases downward, and the gases push the rocket upward with an equal force, propelling it into space. This is an example of what law of motion.
What is Newton's 3rd Law of motion/Law of action-reaction?
The instantaneous velocity of an object thrown straight up at the moment it reaches its maximum height.
What is zero (v= 0 m/s)?
The average acceleration of a racer that increases its speed from 2.2 m/s to 4.5 m/s over 5.0 s.
What is 0.46 m/s2 ?
**a=4.5-2.2/5
In a collision, the quantity that must be maximized to result in a lower force received by the driver, assuming the impulse remains constant.
What is impact time?
The calculated Net force acting on a 5 kg block accelerating at 3 m/s2 ?
What is 15 N? F=MA : F= 5kg X 3 m/s2
The formula that mathematically relates net force, mass, and acceleration.
What is F=MA?
Imagine you are laying in bed and you are staring at ceiling fan in your bedroom. You suddenly remember your amazing physics class, and when we talked about acceleration. What are the 3 conditions for acceleration to happen and knowing this is the ceiling fan acceleration?
What is change in speed (slowing down/speeding up) and change in direction and yes the fan is accelerating because it is changing direction?
The displacement of an object that accelerates at 4.0 m/s2 for 5.0 s, starting from rest.
HINT: use the d=vi t + 1/2 at2
What is 50 meters?
The amount of work done by a person who pushes a wall with 500 N of force for 10 minutes.
What is Zero Joules?
* Remember, Work requires displacement in the direction of the force.
The acceleration of a 50 kg sled if a net force of 150 N is applied to it.
What is 3 m/s2 ?
*a=F/m= 150 N /50 kg
To achieve the same acceleration as a small 1 kg object that is pushed with a 10 N net force, a large 10 kg object would require this magnitude of net force.
What is 100 N net force?
*Notice* The mass is 10 times greater, so the force must also be 10 times greater to maintain the same acceleration. *Remember* force and mass are proportional when acceleration is constant.