Question

what happens to the brain when football players are hit? scientists placed sensors in their helmets to find out. which two things did these sensors measure? a the location of the ball when players are hit b the direction the head moves when players collide c how fast players are running before they are hit d how much the players weigh at the time of a tackle e how fast the head moves when players are hit

Explanation:

To determine what the sensors measure, we analyze each option:

• Option A: The sensors are in helmets, so measuring the ball's location is irrelevant. Eliminate A.
• Option B: When players collide, the head's movement direction is relevant to brain impact. This is a valid measurement.
• Option C: The sensors are in helmets, not for measuring running speed. Eliminate C.
• Option D: Helmet sensors don't measure player weight during a tackle. Eliminate D.
• Option E: The speed of the head's movement when hit is relevant to brain impact. This is a valid measurement.

So the two correct options are B and E.

Answer:

B. the direction the head moves when players collide, E. how fast the head moves when players are hit