A
Which of the following quantities is a vector?
A) Speed
B) Distance
C) Velocity
D) Time
C) Velocity
Velocity includes both the speed of an object and the direction of its motion.
True / False
true
The rate of change of velocity with respect to time is defined as:
A) Speed
B) Acceleration
C) Displacement
D) Momentum
B) Acceleration
An object moving in a circle at a constant speed is accelerating because its direction is constantly changing.
true / false
true
According to Newton's First Law of Motion, an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity, unless acted upon by:
An unbalanced external force
Inertia is a force that pulls objects toward the center of the Earth.
True / False
False
Newton's Second Law of Motion is mathematically expressed as:
F = ma
If the net force acting on a moving object is zero, the object will eventually slow down and stop.
True / False
False
"For every action, there is an equal and opposite reaction." This is a popular statement of:
A) Newton's First Law
B) Newton's Second Law
C) Newton's Third Law
D) The Law of Conservation of Momentum
C) Newton's Third Law
Today is Friday
True / false
LOL - free mark