Biomechanics - Kinematic Concepts

Linear motion occurs in a :

• a. circular path.

• b. curved path.

• c. straight line.

• d. all of the above.

Rotation and Forwards Movement is caused by :

• a. an eccentric force.

• b. a concentric force.

• c. a force couple.

• d. a translatory force.

Which of the following activities involves both linear and angular motion?

• a. the movement of the cyclists hands as she rides forward.

• b. a forward roll.

• c. a giant swing on the horizontal bar.

• d. the glide phase in breastroke.

A cyclist travels 160 metres from a stationary start in ten seconds. His average velocity is :

• a. 0.625 m/sec.

• b. 1.6 m/sec.

• c. 1.6 m/sec/sec.

• d. 16 m/sec.

A runner is jogging at 4 m/sec. but slows down to a walking pace of 2 m/sec. over a period of 5 seconds. The acceleration of the runner is :

• a. 0.4 m/sec/sec.

• b. -0.4 m/sec/sec.

• c. -5 m/sec/sec.

• d. 10 m/sec/sec

The horizontal distance a projectile travels depends on :

• a. velocity at release.

• b. angle of release.

• c. height of release.

• d. all of the above.

When throwing a discus for distance, providing that all else remains constant, a taller person will:

• a. throw at the same angle.

• b. throw at an increased angle.

• c. throw at a decreased angle.

• d. throw at 45 degrees.

When the height of release is the same as the height of the landing, the best angle of release for maximum horizontal distance is :

• a. 30 degrees.

• b. 45 degrees.

• c. 60 degrees.

• d. 90 degrees.