# physics

posted by .

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.8 .
A hockey puck with a weight of 0.80 is sliding freely across a section of very smooth (frictionless) horizontal ice.
Part A

When it is sliding freely, how does the upward force of the ice on the puck (the normal force) compare with the upward force when the puck is sitting permanently at rest?

When it is sliding freely, how does the upward force of the ice on the puck (the normal force) compare with the upward force when the puck is sitting permanently at rest?

The upward force is greater when the puck is sliding.

The upward force is less when the puck is sliding.

The upward force is the same in both situations.

• physics -

The upward force is the same in both situations.

• physics -

The upward force is the same in both situations

## Similar Questions

1. ### physics

a hockey puck is sliding freely across a pound of friction ice. What is the free-body diagram?
2. ### physics

a2kg hockey puck is sliding across the frictionless ice at 6m/s.how much force is required to keep it moving at 6m/s
3. ### physics

a hockey puk is sliding across frictionless ice at 6m/s. a) what is the net force on the puck?
4. ### physics

a hockey puck is sliding across frictionless ice at 6m/s. a)what is the net force on the puck?
5. ### physics

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.80 . A 3000 truck tows a 1500 car by a chain. Part A If the net forward force on the truck by the ground is 3500 , what is the acceleration of the …
6. ### physics

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.80 . A block of mass 23.0 slides down a frictionless surface inclined at 35. Part A To ensure that the block does not accelerate, what is the magnitude …
7. ### physics

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.80 . When a horizontal force of 340 is applied to a 68.0 box, the box slides on a level floor, opposed by a force of kinetic friction of 150 . Part …
8. ### Physics

While sliding horizontal on a frictionless surface at a speed of 30 m/s, a hockey puck of mass 0.16 kg is struck by a hockey stick. After leaving the stick, the puck has a speed of 22 m/s in the opposite direction. The magnitude of …
9. ### Physics

A 112 g hockey puck glides across a frictionless ice surface with no horizontal forces acting on it. If the puck's velocity is 22.5 m/s to the right at t = 0 s, what will the puck's horizontal velocity be at t = 225 ms?
10. ### college physics

A hockey puck of mass 0.228 kg si sliding across level ice. There is a force of friction of 0.057 N acting opposite the direction of motion of the puck while it is sliding. a) what is the acceleration of the puck while it is sliding?

More Similar Questions