KIN 368 Exam 2 Review

“To any action there is always an opposite and equal reaction” is newtons what law of motion?

• first

• second

• third

• fourth

Law of inertia states “Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change the state by forces impressed upon it“

• True

• False

What is an elastic collision?

• Objects collide and remain in contact moving at the same velocity

• Objects collide and stay still

• Objects collide and bounce off each other

• Objects avoid colliding with each other.

Negative work is if the displacement is in the same direction as the force.

• True

• False

What type of energy depends on position or deformation?

• Kinetic energy

• Gravitational potential energy

• Strain energy

• Potential energy

On Earth, the center of gravity of an object is the same as its

• center of mass

• velocity

• power

• work

What is the velocity of a football player that ran 40 yards in 5 seconds?

• 8 yds/s

• 10 yds/s

• 4 yds/s

• 6 yds/s

General motion is a combination of linear and angular motion.

• True

• False

What is the limiting factor for lifting a heavy object?

• weight

• time

• average net force

• height

Centric force produces torque.

• True

• False