_________ moving or tending to move toward a center.

• centripetal force

• centrifugal force

• speed

• velocity

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

• Friction
• Centripetal Force
• Gravity
• Inertia

Tags

NGSS.HS-PS2-1

Where is the net force when the rollercoaster is at the top of the loop?

• Towards the sky
• Towards the Right
• Towards the left
• Towards the ground

Tags

NGSS.HS-PS2-1

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which of the following represent the possible direction for speed of the moving ball in a circular motion?

• A

• B

• C

• D

Which of the following is not true about origin of centripetal forces?

• When a aircraft banks to move in a horizontal circle, the vertical component of lift provides the centripetal foce.

• A bicycle tilts to side when cornering so that the horizontal component of normal reaction provides the centripetal force.

• Gravitation force by the Sun on Mars causes Mars to orbit about the Sun.

• In a conical pendulum, the horizontal component of the tension in string provides the centripetal focre.

What is the direction of the velocity at point B, if the ball is revolving clockwise?

• up
• right
• down
• left

The velocity is always _____ to the line of a circle. 

• outwards
• towards the center
• tangent
• faster

What is the angular speed of the hour hand in a clock?

• (π/12) rad h⁻¹

• (π/24) rad h⁻¹

• (2π/12) rad h⁻¹

• (2π/60) rad h⁻¹

What happens to an object's speed as the radius decreases?

• It increases.
• It decreases.
• It remains unchanged.