PSC 1121 EXAM 1 WITH ALL CORRECT & VERIFIED
ANSWERS (UPDATED TO PASS)
Newton's First Law Correct answer-The velocity of an objects remains constant unless and
unbalanced force acts upon the object.
Newton's Second Law Correct answer-If there are unbalanced forces, the object is going to
accelerate. Fnet=ma
Newton's Third Law Correct answer-Equal and Opposite (skateboarders); this one has to do with
momentum
______ carries inertia. Correct answer-Mass
Inertia Correct answer-object at rest stays at rest, object in motion stays in motion
Momentum Involves Correct answer-inertia and velocity
Gravity depends on Correct answer-mass and distance between two objects
Weight in Physics/Weight Force Correct answer-W = mg
What's the difference between velocity and acceleration Correct answer-Velocity: speed at a
specific time,
acceleration: the amount with which you increase the velocity/speed; speed over an amount of time
An object following a straight-line path at a constant speed Correct answer-has zero acceleration
Acceleration Correct answer-The rate at which the speed changes
Velocity Correct answer-encodes direction and speed
Impulse Equation Correct answer-fΔt = mΔv
Impulse Correct answer-f Δt
m Δv Correct answer-Momentum
Unit:
Mass Correct answer-kg
Unit:
Force Correct answer-N (kg m/s²)
Unit:
Acceleration Correct answer-m/s²
Unit:
Velocity Correct answer-m/s
Unit:
ANSWERS (UPDATED TO PASS)
Newton's First Law Correct answer-The velocity of an objects remains constant unless and
unbalanced force acts upon the object.
Newton's Second Law Correct answer-If there are unbalanced forces, the object is going to
accelerate. Fnet=ma
Newton's Third Law Correct answer-Equal and Opposite (skateboarders); this one has to do with
momentum
______ carries inertia. Correct answer-Mass
Inertia Correct answer-object at rest stays at rest, object in motion stays in motion
Momentum Involves Correct answer-inertia and velocity
Gravity depends on Correct answer-mass and distance between two objects
Weight in Physics/Weight Force Correct answer-W = mg
What's the difference between velocity and acceleration Correct answer-Velocity: speed at a
specific time,
acceleration: the amount with which you increase the velocity/speed; speed over an amount of time
An object following a straight-line path at a constant speed Correct answer-has zero acceleration
Acceleration Correct answer-The rate at which the speed changes
Velocity Correct answer-encodes direction and speed
Impulse Equation Correct answer-fΔt = mΔv
Impulse Correct answer-f Δt
m Δv Correct answer-Momentum
Unit:
Mass Correct answer-kg
Unit:
Force Correct answer-N (kg m/s²)
Unit:
Acceleration Correct answer-m/s²
Unit:
Velocity Correct answer-m/s
Unit:
