An Experiment That Can Be Used to Measure the Velocity

question 81

Multiple Choice

An experiment that can be used to measure the velocity of a bullet is to have two cardboard disks attached to a rotating shaft some distance apart and to measure the angular separation of the holes made by the bullet. In such an experiment, two cardboard disks are placed 0.534 m apart on a shaft that is rotating at 3000 rpm. The bullet is fired parallel to the axis and the angular separation of the holes is measured to be 22.0°. What is the speed of the bullet?

• A) 72.8 m/s
• B) 139 m/s
• C) 219 m/s
• D) 437 m/s
• E) 1380 m/s

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