Assignment:
Q1 = A particle:
A) has an average speed of 18 m/s if it moves 10 meters in 180 seconds.
B) travels a distance of 11 meters if it has a velocity of 4 m/s for 2.5 seconds.
C) has an average acceleration of 4 m/s^2 if it falls from 2 m/s to 8 m/s in 4 seconds.
D) has an average time of 18 s if it moves 60 meters at a velocity of 5 m/s.
E) has an average velocity of 2 m/s if it moves 6 meters in 3 seconds
Q2 = A particle has:
A) an average acceleration of 6 m/s^2 if it goes from 2 m/s to 6 m/s in 2 seconds.
B) an average acceleration of 4 m/s^2 if it goes from 2 m/s to 6 m/s in 2 seconds.
C) an average acceleration of 12 m/s^2 if it goes from 2 m/s to 6 m/s in 2 seconds.
D) an average acceleration of 3 m/s^2 if it goes from 2 m/s to 6 m/s in 2 seconds.
E) an average acceleration of 2 m/s^2 if it goes from 2 m/s to 6 m/s in 2 seconds.
Q3 = A particle in free-fall: (NOTE: d = ½*g*t^2)
A) takes 42 seconds to travel 490 meters at g= 9.8 m/s^2.
B) takes 15.8 seconds to travel 490 meters at g= 9.8 m/s^2.
C) takes 4.5 seconds to travel 490 meters at g= 9.8 m/s^2.
D) takes 10 seconds to travel 490 meters at g= 9.8 m/s^2.
Q4 = The momentum:
A) of a 10 kg object is 20 kg*m/s if its velocity is 200 m/s.
B) of a 10 kg object is 20 kg*m/s if its velocity is 20 m/s.
C) of a 10 kg object is 20 kg*m/s if its velocity is 2 m/s.
D) of a 10 kg object is 20 kg*m/s if its velocity is 0.5 m/s.
E) of a 10 kg object is 20 kg*m/s if its velocity is 0.2 m/s.
Q5 = The weight:
A) of an object having a mass of 100 kg at g= 9.8 m/s^2 is 980 N.
B) of an object having a mass of 100 kg at g= 9.8 m/s^2 is 0.098 N
C) of an object having a mass of 100 kg at g= 9.8 m/s^2 is 9.8 N
D) of an object having a mass of 100 kg at g= 9.8 m/s^2 is 980 Joules
E) of an object having a mass of 100 kg at g= 9.8 m/s^2 is 980 kg
Q6 = If an object on Planet X weighs 167 N and has a mass of 100 kg, what is the value of gravity, g, for Planet X?
A) 0.167 m/s^2
B) 16.70 m/s^2
C) 1.67 kg
D) 1.67 N*kg
E) 1.67 m/s^2
Q7 = The mass of an object:
A) is 0.1 kg if it weighs 98 N at g=9.8 m/s^2..
B) is 10kg if it weighs 98 N at g=9.8 m/s^2.
C) of an object is 1kg if it weighs 98 N at g=9.8 m/s^2.
D) is 100 kg if it weighs 98N at g=9.8 m/s^2
Q8 = The momentum
A) of a 10 kg object traveling at 5 m/s is 50 kg*m/s.
B) of a 10 kg object traveling at 5 m/s is 5 kg*m/s.
C) of a 10 kg object traveling at 5 m/s is 0.5 kg*m/s.
D) of a 10 kg object traveling at 5 m/s is 500 kg*m/s.
Q9 = A force
A) of 600 N is needed to stop an object having a mass of 12 kg and an acceleration of 5 m/s2.
B) of 6 N is needed to stop an object having a mass of 12 kg and an acceleration of 5 m/s2.
C) of 0.6 Joules is needed to stop an object having a mass of 12 kg and an acceleration of 5 m/s2.
D) of 60 N is needed to stop an object having a mass of 12 kg and an acceleration of 5 m/s2.
Q10 = An object experiences a force of 100 N, and an acceleration of 10 m/s2. What is the mass of the object?
A) 1.0 kg
B) 10 N
C) 100 kg
D) 10 kg
E) 0.1 kg
Q11 = How much work is done on an object that travels 3 meters under a constant force of 2 Newtons?
A) 6 N
B) 0.6 N
C) 60 J
D) 6 J
E) 0.6 J
Q12 = What distance can an 11 kg object be moved by 150 Joules of work at a constant force of 10 Newtons?
A) 1.5 m
B) 15 m
C) 13.6 m
D) 150 m
E) 134 m
Q13 = How much power is generated by 100 Joules of work over a 10 second period?
A) 1 Watt
B) 100 Watts
C) 1000 Watts
D) 0.1 Watts
E) 10 Watts
Q14 = How much potential energy is created when an 11 kg object is carried up a 3 m ladder, if gravity, g = 9.8 m/s^2?
A) 107.8 J
B) 323.4 N
C) 29.4 J
D) 323.4 J
E) 107.8 N
Q15 = How much kinetic energy is generated by a 10 kg object traveling at a velocity of 2 m/s?
A) 200 N
B) 20 J
C) 2.0 J
D) 0.2 kg*m/s
E) 20 Watts
Q16 = The force exerted on an object by gravity is known as:
A) volume.
B) pressure.
C) mass.
D) weight.
E) inertia.
Q17 = A 5-kg object at rest on the ground has:
A) potential energy.
B) kinetic energy.
C) inertia.
D) momentum.
Q18 = What is the unit for mass?
A) meter (m)
B) second (s)
C) Newtons (N)
D) cubic meters (m^3)
E) kilogram (kg)
Q19 = Identify the vector quantity below:
A) Force
B) Mass
C) Volume
D) Sound
E) Speed
Q20 = Momentum is based on:
A) mass and acceleration.
B) volume and force.
C) force and pressure.
D) velocity and mass.
Q21 = Force is:
A) the push or pull on an object.
B) the amount of work needed to move an object from one place to another.
C) the amount of energy needed to move an object from one place to another.
D) the amount of mass needed to fill a specific volume.
E) all of the above.
Q22 = Mechanical equilibrium is:
A) when opposing forces work together to move an object.
B) when all forces acting on an object cancel each other out.
C) the amount of energy needed to move an object a given distance.
D) when nature is in disorder.
Q23 = Volume is:
A) the amount of mass in an object.
B) the area of an object divided by its density.
C) the amount an object weights times the area it occupies.
D) the space an object occupies.
E) the mass of an object divided by its volume.
Q24 = Friction:
A) is a force that assists an objects forward motion.
B) is a force that increases an objects acceleration.
C) the contact area of an object.
D) acts in a direction opposite motion.
Q25 = Newtons Third Law of Motion states:
A) every mass has equal inertia.
B) every force has a unique value of mass.
C) the force to mass ratio is equal to acceleration.
D) every action creates an equal and opposed reaction.
E) resistance is equal to voltage divided by current.