Exploring Circular Motion Concepts

What is the period in circular motion?

• The number of rotations per unit time

• The distance around the circle

• The time it takes for one full rotation

• The speed of an object moving in a circle

Tags

NGSS.HS-ESS1-4

If an object has a frequency of 0.5 Hz, what is its period?

• 2 seconds

• 0.5 seconds

• 1 second

• 2.5 seconds

Tags

NGSS.HS-PS4-1

How do you calculate the linear speed of an object in circular motion?

• 2πr / T

• r / T

• 2πr * T

• r * T

What is the centripetal acceleration of an object moving in a circle?

• r^2 / V

• V * r

• r / V^2

• V^2 / r

What is the unit of centripetal force?

• Meters per second

• Hertz

• Newtons

• Seconds

What is the centripetal force on a dog with a mass of 18.5 kg and an acceleration of 1.0 m/s²?

• 21 N

• 20 N

• 18.5 N

• 19 N

Tags

NGSS.HS-PS2-1

Which equation can be used to find centripetal force if velocity, mass, and radius are known?

• FC = m * v² / r

• FC = m * r / v²

• FC = m * a

• FC = m * g

A 905 kg car travels around a circular track with a circumference of 3.25 km and a centripetal force of 2140 N. What is the car's tangential speed?

• 37.5 m/s

• 35.0 m/s

• 32.5 m/s

• 30.0 m/s

Tags

NGSS.HS-PS2-1

What is the minimum speed a 0.34 kg ball must have at the top of its arc to continue moving in a circle?

• 4.0 m/s

• 3.5 m/s

• 3.0 m/s

• 2.5 m/s

Tags

NGSS.HS-PS2-1

A 1000 kg car rounds a curve with a radius of 50 meters at a speed of 14 m/s. If the pavement is dry with a coefficient of static friction of 0.6, will the car follow the curve or skid?

• Follow the curve

• Cannot be determined

• None of the above

• Skid

Tags

NGSS.HS-PS2-1