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Eleventh Grade (Grade 11) Mechanics Questions

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Grade 11 Motion in Two- and Three-Dimensions
As mass increases, what happens to the gravitational force?
  1. It increases.
  2. It decreases.
  3. It does not change.
Grade 11 Forces and Motion
An athlete is whirling a hammer on a chain around their head. Neglecting air resistance, how would the horizontal acceleration and velocity of a hammer change if the they accedentially releases the chain?
  1. The horizontal acceleration and velocity of the hammer would be inward toward the thrower.
  2. The horizontal acceleration and velocity of the hammer would be straight down by gravity.
  3. The horizontal acceleration and velocity of the hammer would be along the Vtang vector.
  4. The horizontal acceleration and velocity of the hammer would be continue in a circle.
Grade 11 Energy and Momentum
When plants convert the sun's energy into food, which type of energy is it?
  1. kinetic
  2. thermal
  3. chemical
  4. radiant
Grade 11 Forces and Motion
A block of mass m is attached to an ideal spring is free to glide on a frictionless table, as shown. At the point x=X, the block's potential energy reaches its
Harmonic Motion #1
  1. minimum.
  2. maximum.
  3. average value.
  4. either maximum or minimum, depending on other factors.
Grade 11 Forces and Motion
Archimedes stated that the buoyant force was equal to the                              .
  1. mass of the object
  2. volume of the fluid displaced
  3. weight of the object
  4. weight of the fluid displaced
Grade 11 Forces and Motion
Which of these is true for a body in mechanical equilibrium?
  1. The vector sum of all external forces is zero.
  2. The sum of the moments of all external forces about any line is zero.
  3. Both of the above.
Grade 11 Forces and Motion
According to Hooke’s Law, the graph of the applied force, F, as a function of the displacement of the spring, x, will be
  1. a straight line, with slope, k, passing through x=12.
  2. a straight line with slope, k, passing through x=1.
  3. a parabola passing through the origin.
  4. a straight line with slope, k, passing through the origin.
Grade 11 Fluid Mechanics
Which of the following is a correct statement of Bernoulli’s principle?
  1. The pressure in a fluid decreases as the fluid’s velocity increases.
  2. The pressure in a fluid increases as the fluid’s velocity increases.
  3. The density of a fluid decreases as the fluid’s velocity increases.
  4. The density of a fluid increases as the fluid’s velocity increases.
Grade 11 Forces and Motion
A pilot experiences a centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s. What is the radius of the loop? (g = 9.8ms2)
  1. 8.163×103m
  2. 8.163×106m
  3. 8.163×107m
  4. 8.163×108m
Grade 11 Motion in Two- and Three-Dimensions
A ball on a string is spun around in a circle. Which of the following quantities is not constant?
  1. mass
  2. velocity
  3. force
  4. acceleration
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