the circular motion: (velocity, frequency, and periodic time)

Which ball is faster ( has greater speed)?

• The Blue ball

• The Red ball

• Both balls have the same speed

Explain why the Red ball is faster than the Blue ball?

• the Red ball traveled greater path or distance in less time than Blue ball

• the Red ball traveled greater path or distance in greater time than Blue ball.

• the Red ball traveled greater path or distance in Same time as the Blue ball

The Marina Eye in Abu Dhabi has a radius of 30.0 m and completes one revolution in a period (T) of 120 seconds.   Calculate the speed of the pods attached to the Ferris wheel?

• 1.6m/s

• 0.6m/s

• 0.5m/s

• 47.1m/s

The Marina Eye in Abu Dhabi has a radius of 25.0 m Rotates with a speed 1.5m/s. How much time it needs to complete one revolution ?

• T=0.66s

• T=33.3 s

• T= 52.33 s

• T= 104.6s

What is the  speed of one rotation for the second hand if its length 10 cm?

• v= 62.8 m/s

• v= 1.6 m/s

• v= 0.63 m/s

What is the  speed of one rotation for the

The minute hand if its length 8 cm?

• v= 0.83 m/s

• v= 120 m/s

What is the  speed of one rotation for the

hour hand  if its length 9cm?

• v= 0.94 m/s

Ali is rotating a stone suspended by a thread of a length r . If the speed of rotation is 2m/s and the periodic time is 0.5s. What is the length of the thread ?

• r= 0.16 m

• r= 6.28 m

• r= 1 m

• r= 0.31 m

What is the time of one rotation for the

The second hand?

• 1 second

• 60 second

• 60 min

• 1 hour

What s the uniform circular motion?

• Is the time needed for an object to travel one complete circle

• Is the movement of an object in a perfect circle path.

• Is the movement of an object in a perfect circle at a constant speed. The circular path has a fixed radius.