Equations
If a boat travels for 33 minutes over 700 miles how many mph does the boat travel for
V=d/t 21mph
What is Force?
A push or pull one body exerts on another
What the difference between balanced and unbalanced forces
Balanced forces: forces on an object that are equal in size in opposite directions Unbalanced forces: when two forces acting on an object are in opposite directions but not equal in magnitude
A man applies a force of 100N on a box left two men each put a force of 49N on the box to the right. What's the Net force?
2N to the left
What Newton law would bouncing a basketball best represent it
Newtons third law
A penny is dropped from a building that is 44 meters tall in hit a person in 5 seconds what was the acceleration of the penny if it started at rest assuming no air resistance
A=3.52m/s
What is Net Force?
The sum of the forces acting on an object
What is the difference between mass and weight?
Mass is a measure of the amount of matter in an object.Weight is a measure of the effect of gravity on that mass.
A paper falls down a 550ft building it experiences a 8.456N of air resistance what's its net force
F=1.344N
Is Force a vector or scalar quantity
A vector quantity
Usain bolt weighs 209Ibs and runs 9.58secs in 100meters races how much force does he have?
F= 206.14N
What is Work?
The product of force to displacement/distance
What is the difference between speed and velocity?
Speed only describes the rate at which something is moving While velocity describes speed and direction
If I put a force of 200N on a box and it moves at a 5.8m/s how much mass does it have
M=34.48kg
What conditions of motion are possible when the net force is zero?
At rest or move with constant velocity
A Truck weighs 4,100 pounds and goes 50meters in 2 seconds if it started at rest how much work does it do?
W=2329537.5J
What is Power?
The rate of doing work
What is the difference between distance and displacement?
Speed is a Scalar quantity Velocity is a vector quantity
I dropped my phone of a building at the top of a building that has a mass of 7.3Kg what force does it hit the ground?
F=71.54N
What requirements must be met in order for work to be done to an object?
For work to be done on an object, a force must be applied to the object and the object must move in the direction of the force
Keenan weights 220 pounds and runs a 6 second in 50meters(he starts at rest) how much power does he do?
P=2303.41Watts
What is Terminal velocity?
Terminal velocity is the maximum speed attainable by an object as it falls
What is the difference between a vector quantity and a scalar quantity
Scalar has only magnitude(size) but no direction Vector has both magnitude(size) and direction
Keenan ran a 4 second in 50 meters he has a mass of 99kg. if he bumps into someone at what force does he hit them?
F=1237N
Why don’t all objects appear to fall at the same rate on earth?
Shape and air resistance