Lesson 4 Angular Motion

What is the SI unit for angular displacement?

• newtons (N)

• degrees (°)

• radians (rad)

• meters (m)

What is the formula for angular velocity?

• ω = θ * t

• ω = θ/t

• ω = θ + t

• ω = 2πf

If a cyclist has an angular displacement of 6.28 radians, how many complete revolutions have they made?

• 0.5 revolutions

• 2 revolutions

• 1 revolution

• 3 revolutions

What does centripetal acceleration depend on?

• Mass and speed

• Torque and force

• Angular displacement and time

• Linear velocity and radius

What is the formula for torque?

• τ = F / r

• τ = F - r

• τ = F + r

• τ = F * r

What is the angular acceleration if the final angular velocity is 20 rad/s and the initial angular velocity is 0 rad/s over 5 seconds?

• 2 rad/s²

• 3 rad/s²

• 4 rad/s²

• 5 rad/s²

Which of the following describes angular motion?

• Movement with no acceleration

• Movement in a straight line

• Movement around a fixed point

• Movement with constant speed

What is the relationship between linear velocity and angular velocity?

• v = ω/r

• v = rω

• v = ω * r²

• v = r/ω

What is the angular displacement for one complete rotation?

• 180°

• 2π rad

• 360°

• π rad

If a wheel has a radius of 0.5 meters and is rotated by an angle of θ = 4π radians, what is the linear displacement?

• 2π meters

• 4π meters

• 8π meters

• π meters