Exam 12: Linear Kinetics of Human Movement

A 500N gymnast performing a giant swing with an angular velocity of 5 rad/sec, exerts 90 Nm of torque on the support bar. How much torque is exerted by the bar on the gymnast's hands?

Which of the following affects the coefficient of restitution between a tennis racket and tennis ball?

Newton's law of acceleration demonstrates the relationship between acceleration, ___________________ and ___________________.

The higher the jump, the "harder" the landing. This statement reflects which of the following laws?

A number that serves as an index of elasticity for colliding bodies is called coefficient of ___________________.

Elite sprinters display greater impulse against the starting blocks than sub-elite sprinters.

The 2 variables that determine momentum are

Which of the following is true of the coefficient of restitution of a racquetball?

Explain why pulling a heavy object is easier than pushing it, including appropriate formulas in your answer.

Which of the following pairs of quantities are expressed in the same units of measure?

What variable may be described as "the quantity of motion" possessed by an object?

Harder running surfaces result in greater ground reaction forces.

New blade designs have resulted in extremely low values for the kinetic friction coefficients of ice hockey skates on ice.

The capacity for doing work that a body possesses because of its height or position is called what?

Which of the following relationships is correct?

Explain the relationship between linear momentum and linear impulse by providing appropriate formula(s) and examples.

When two bodies collide head-on and then continue to travel collectively in the original direction of motion of one of the bodies, what factor determines the direction of collective motion after the collision?

How does wearing gloves increase the friction between the hands and the bat?

Which of the following mechanical quantities is evident in explosive track and field events, such as the long jump and the shot put.

Which quantity is not a force?