MECHANICAL LAW ACTUAL TEST FULL
QUESTIONS AND CORRECT ANSWERS
EXAMPREP STUDY SHEET
●● friction
Answer: Two solid objects moving against each other experience
●● types of friction
Answer: 1 static friction. 2 kinetic friction
●● static friction
Answer: When the to objects are not moving relative to each other
●● gravitational force
Answer: All objects in the universe attract each other
●● gravitational potential energy
Answer: the potential an object has to do work as a result of being
located at a particular position in a gravitational field
●● what is the difference between mass and weight?
,Answer: mass is the amount of matter an object has, while weight is the
amount of force exerted on the object's mass by gravity
●● the basic unit of force is the _______ and it represents ________
Answer: newton (N); the force required to accelerate one kg by one
meter per second per second: kg . m/s2
●● Newton's 1st Law of Motion
Answer: An object at rest tends to stay at rest, and an object in motion
tends to stay in motion at constant velocity unless acted on by an
unbalanced force
●● Formula for acceleration
Answer: a = change v / change t; acceleration equals change in velocity
divided by change in time
●● Basic unit of work is ______ and it represents _______
Answer: joule (J); Newtons times meters; kg . m2/s2
●● Newton's law of universal gravitation formula
Answer: Fg - Gm1m2 / r2;
Force of gravity, G is a constant equal to 6.67 x 10^-11, and r is the
distance between the two objects
,●● energy
Answer: the capacity to do work
●● Power is defined as _____ and measured in ______
Answer: the rate at which work is performed; watts (sometimes
horsepower)
●● net force
Answer: refers to the total of various pushes and pulls acting on an
object
●● inertia
Answer: the tendency of objects to resist changes in their motion
●● acceleration due to gravity is approximately ___ meters per second
per second, not counting air resistance
Answer: 9.8
●● formula for work
Answer: w = fd
work = force x displacement
●● formula for momentum
, Answer: p=mv
momentum (p) = mass x velocity
●● forumula for momentum rewritten to solve for mass
Answer: m = p/v
●● formula for power
Answer: p = w/t
power = work divided by time
●● kinetic energy
Answer: energy possessed by a moving object
●● Newton's 3rd law of motion
Answer: For every action, there is an equal and opposite reaction
●● acceleration is measured in _______
Answer: meters per second per second
m/s2
●● F=ma is the mathematical formula representing Newton's _______
Answer: Newton's 2nd law of motion
QUESTIONS AND CORRECT ANSWERS
EXAMPREP STUDY SHEET
●● friction
Answer: Two solid objects moving against each other experience
●● types of friction
Answer: 1 static friction. 2 kinetic friction
●● static friction
Answer: When the to objects are not moving relative to each other
●● gravitational force
Answer: All objects in the universe attract each other
●● gravitational potential energy
Answer: the potential an object has to do work as a result of being
located at a particular position in a gravitational field
●● what is the difference between mass and weight?
,Answer: mass is the amount of matter an object has, while weight is the
amount of force exerted on the object's mass by gravity
●● the basic unit of force is the _______ and it represents ________
Answer: newton (N); the force required to accelerate one kg by one
meter per second per second: kg . m/s2
●● Newton's 1st Law of Motion
Answer: An object at rest tends to stay at rest, and an object in motion
tends to stay in motion at constant velocity unless acted on by an
unbalanced force
●● Formula for acceleration
Answer: a = change v / change t; acceleration equals change in velocity
divided by change in time
●● Basic unit of work is ______ and it represents _______
Answer: joule (J); Newtons times meters; kg . m2/s2
●● Newton's law of universal gravitation formula
Answer: Fg - Gm1m2 / r2;
Force of gravity, G is a constant equal to 6.67 x 10^-11, and r is the
distance between the two objects
,●● energy
Answer: the capacity to do work
●● Power is defined as _____ and measured in ______
Answer: the rate at which work is performed; watts (sometimes
horsepower)
●● net force
Answer: refers to the total of various pushes and pulls acting on an
object
●● inertia
Answer: the tendency of objects to resist changes in their motion
●● acceleration due to gravity is approximately ___ meters per second
per second, not counting air resistance
Answer: 9.8
●● formula for work
Answer: w = fd
work = force x displacement
●● formula for momentum
, Answer: p=mv
momentum (p) = mass x velocity
●● forumula for momentum rewritten to solve for mass
Answer: m = p/v
●● formula for power
Answer: p = w/t
power = work divided by time
●● kinetic energy
Answer: energy possessed by a moving object
●● Newton's 3rd law of motion
Answer: For every action, there is an equal and opposite reaction
●● acceleration is measured in _______
Answer: meters per second per second
m/s2
●● F=ma is the mathematical formula representing Newton's _______
Answer: Newton's 2nd law of motion
