Midterm 2 Review

Which of the following force types will not change linear motion?

• Concentric Force

• Eccentric Force

• Force Couple

Which of the following statements are true about dropped objects? (Select all that apply)

• Dropped objects have no kinetic energy at the top

• At the halfway point, KE = PE

• Potential energy decreases as an object drops

• Total energy is lower at the end of the drop

If two rotating objects have the same tangential linear velocity, the object with the ______ radius will have lower centripetal acceleration.

• Larger

• Smaller

Erica applies an average force of 6N forward on a stationary box, causing it to move 20cm in the direction of the force. How much work did Erica perform on the box?

• 120J

• 1.2J

• 12J

• 0J

Which of the following options is least likely to increase stability?

• Widening the base of support

• Standing in a position where PE is maximized

• Lowering the centre of gravity

• Increasing an object's weight

What is true about the angular velocity of 2 different points along a rotating line?

• The more distal point will have a greater angular velocity

• The more proximal point will have a greater angular velocity

• Both points will have the same angular velocity

• Neither point will have any angular velocity

A contracting muscle moves with a velocity of 2.5m/s. How much force must have been generated to reach a power of 15W?

• 6N

• 37.5N

• 0.2N

• 17.5N

What measure is represented by letter "c"?

• Angular displacement

• Arc length

• Radius

• Chord length

True or false? An object can be said to be in static equilibrium if ΣF = 0 and ΣT = 0

• True

• False

At the skull-axis joint, the force and load sit on opposite sides of the fulcrum, which serves as the axis of rotation. This is an example of a class _____ lever.

• One

• Two

• Three