Imagine an athlete is practicing shot-put using a 12-pound shot, and the athlete throws it 50 feet. The athlete then uses a 16-pound shot and throws it 40 feet. (A shot is a metal ball.) Which statement below is true?
Athlete throwing a shot-put
(1 point)
Responses
The 12-pound shot A has the greater mass and the slower velocity because it is thrown 50 ft.
The 12-pound shot A has the greater mass and the slower velocity because it is thrown 50 ft.
The 16-pound shot B has the greater mass and the slower velocity because it is thrown 40 ft.
The 16-pound shot B has the greater mass and the slower velocity because it is thrown 40 ft.
The shots have the same mass.
The shots have the same mass.
The shots have the same velocity because they are thrown the same distance.
The shots have the same velocity because they are thrown the same distance.
Question 2
True or False: Kinetic energy increases with mass and with velocity.
KE = (1/2) x m x v^2
(1 point)
Responses
True
True
False
False
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The answer to the first question is:
The 12-pound shot A has the greater mass and the slower velocity because it is thrown 50 ft.
The answer to the second question is:
True. Kinetic energy increases with mass and with velocity.