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- 1. Multiple ChoiceFriction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- 2. Multiple Choice
What type of friction is not moving?staticslidingfluidrolling - 3. Multiple Choice
FN=100N, Ff=20N
Ff= U*Fn
μ=5.0
μ=0.2
μ=1.2
μ=0.1
- 4. Multiple Choice
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?
Ff= U*Fn
0.780.510.78 N0.58 N - 5. Multiple Choice
A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box?
Ff= U*Fn
81 N18 N98 N74 N - 6. Multiple Choice
The value of Universal Gravitational constant is
6.673X10-11 Nm-2kg2
6.673X10-11 Nm2kg2
6.673X10-11 Nm2 kg-2
6.673 x10-11 N m-2 kg-2
- 7. Multiple Choice
Newton said that any two masses will...
combine into a larger mass.
attract each other.
create gravitational fields.
push each other apart.
- 8. Multiple ChoiceWhich of the following is Newton's Law on Gravitation?F=Gm1m2/rF = Gm1m2/r2F = Gm1m2/2rF = m1m2/2r
- 9. Multiple ChoiceTwo factors effecting the magnitude of the force of gravity between 2 objects are...mass and distancemass and matterdistance and weightweight and mass
- 10. Multiple Choice
Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.
2.96x10-7N
3.00x10-6N
2.22x10-9N
2.23x10-8N
- 11. Multiple Choice
Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.
2.96x10-9N
3.00x10-6N
2.22x10-9N
2.23x10-8N
- 12. Multiple Choice
Calculate the gravitational force between a 15 kg chinchilla and a 65 kg dog which are separated by 0.30 m.
Given G = 6.67x10-11 N m2 kg-2.
Fg = 3.7x10-8 N
Fg = 1.3x1012 N
Fg = 1.1x105 N
Fg = 7.2x10-7 N
- 13. Multiple Choice
The SI unit of mass is
kg
g
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