Classical Mechanics_Practice

__________ is a measure of how fast an object is moving, describes a change in position with time, and is a scalar quantity.

• Speed

• Torque

• Velocity

• Acceleration

________ is a change in speed over time, and is a vector quantity.

• Velocity

• Acceleration

• Angular Velocity

• Force

______ is how fast an object is traveling at a particular instant of time, possibly a very small time interval.

• Instantaneous speed

• Average velocity

• Tangential velocity

• Linear velocity

The distance a wheel will roll in one revolution is _________, and is equal to the circumference of the wheel.

• Wheel rollout

• Wheel slipping

• Angular velocity

Which of the following is NOT necessary for estimating the robot's maximum speed.

• The formula for average velocity

• The maximum speed of the motor

• The radius of the wheel

• The formula for tangential velocity

Which law of Motion states that the acceleration of an object is directly proportional to the net or total force acting on the object and inversely proportional to the object's mass?

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

_______ is the force due to the gravitational attraction that the Earth exerts on any object.

• Weight (Newtons)

• Mass (kilograms)

• Acceleration due to gravity (9.8 m/s²)

The weight acts through the center of gravity of an object. This is an imaginary point where the weight of the object can be thought of as being concentrated.

• True

• False

Choose all that is true when defining friction.

• The force that opposes an object's motion.

• Occurs between two objects along their common surface.

• Can either prevent both objects from moving

• An increase in friction that occurs across the contact area

The force that prevents an object from moving in response to a push or a pull is defined as __________.

• Static friction

• Kinetic friction

• Traction