VEX Unit 7 Speed, Power, Torque, and DC Motors

What is the name of the field dealing with the study of the bodies in motion?

• Statics

• Classical Mechanics

• Physics

• Aeronautics

What is the equation to calculate the speed of an object?

• Velocity / Distance

• Velocity / Time

• Rotational Cycles / Distance

• Distance / Time

Which of the following is not used in calculating Rotational Speed?

• Time

• Degrees

• Rotational Cycles

• Distance

What is the speed of a robot that travels across a 12 ft field in 4 seconds?

• 3 ft/s

• 6 ft/s

• 8 ft/s

• 16 ft/s

Which of the following parameters are not used to calculate Torque?

• Force

• Distance

• Velocity

• Diameter

What is the torque of a 3 ft tall mechanical arm holding a 4 pound ball 2 ft away from its base?

• 6 ft-lbs

• 8 ft-lbs

• 12 ft-lbs

• 24 ft-lbs

_______ is the rate at which work is performed

• Kinetic Energy

• Power

• Acceleration

• Velocity

As the speed of a motor increases, the _______ decreases.

• Force

• Acceleration

• Velocity

• Torque

Which of the following is not a key motor characteristic when designing robots?

• Stall Torque

• Free Speed

• Free Voltage

• Stall Current

If a motor is spinning at 50 RPM at 6 Volts, what would be the speed if the voltage was increased to 9 Volts?

• 25 RPM

• 50 RPM

• 75 RPM

• 100 RPM