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Motion in Two- and Three-Dimensions Questions - All Grades

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Grade 11 Motion in Two- and Three-Dimensions
In the figure shown, the force exerted by the person on the mass is called                force.
Centripetal Force
  1. Centrifugal
  2. Centripetal
  3. Gravitational
  4. Ellastic
Grade 11 Motion in Two- and Three-Dimensions
A 5kg rock is lifted to a height of 4m in 3 seconds. Which of the following is FALSE?
  1. Its potential energy at the top is 200 J
  2. 200J of work was done on the rock
  3. Its kinetic energy at the ground is 7.5J
  4. The potential energy at the ground is 0J
Grade 8 Motion in Two- and Three-Dimensions
The speed of a reaction at one moment in time is called its                   .
  1. net rate
  2. average rate
  3. reverse reaction
  4. instantaneous rate
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 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
Grade 11 Motion in Two- and Three-Dimensions
The rate at which a rotating object spins, its angular velocity, can be expressed in all of the following ways except
  1. degrees/sec.
  2. rotations/sec.
  3. rad/sec.
  4. rpm.
  5. revolutions/sec.
Grade 11 Motion in Two- and Three-Dimensions
What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?
  1. 5 m/s2
  2. 10 m/s2
  3. 17.63 m/s2
  4. 8.81 m/s2
Grade 11 Motion in Two- and Three-Dimensions

This question is a part of a group with common instructions. View group »

In the diagram shown, what force is required to keep an object of mass [math]m[/math] from slipping off the disk?
Circular Motion
  1. [math]mg[/math]
  2. [math](mv^2)/r[/math]
  3. [math](mv^2)/(2g)[/math]
  4. [math](2pimg)/v^2[/math]
Grade 11 Motion in Two- and Three-Dimensions
A speed skater wants to reduce drag to improve her 500 m time. Which factor should her coach ensure that she applies when competing?
  1. Low tucked body position
  2. Stay behind other skaters before overtaking.
  3. Tight speed skin suit
  4. All of the above
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