BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact Telemetry (HIT) System that can be used to collect data about head accelerations during impacts on the playing field. The researchers observed 249,613 impacts from 423 football players at nine colleges and high schools and collected collision data from participants in other sports. The accelerations during moast head impacts (> 89%) in helmeted sports caused head accelerations less than a magnitude of 400 m/s 2 . However, a total of 11 concussions were diagnosed in players whose impacts caused accelerations between 600 and 1800 m/s 2 , with most of the 11 over 1000 m/s 2 . Suppose that the magnitude of the head velocity change was 10 m/s. which time interval for the collision would be closest to producing a possible concussion with an acceleration of 1000 m/s 2 ? a. 1s b. 0.1 s c. 10 -2 s d. 10 -3 s e. 10 -4 s
BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact Telemetry (HIT) System that can be used to collect data about head accelerations during impacts on the playing field. The researchers observed 249,613 impacts from 423 football players at nine colleges and high schools and collected collision data from participants in other sports. The accelerations during moast head impacts (> 89%) in helmeted sports caused head accelerations less than a magnitude of 400 m/s 2 . However, a total of 11 concussions were diagnosed in players whose impacts caused accelerations between 600 and 1800 m/s 2 , with most of the 11 over 1000 m/s 2 . Suppose that the magnitude of the head velocity change was 10 m/s. which time interval for the collision would be closest to producing a possible concussion with an acceleration of 1000 m/s 2 ? a. 1s b. 0.1 s c. 10 -2 s d. 10 -3 s e. 10 -4 s
BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact Telemetry (HIT) System that can be used to collect data about head accelerations during impacts on the playing field. The researchers observed 249,613 impacts from 423 football players at nine colleges and high schools and collected collision data from participants in other sports. The accelerations during moast head impacts (> 89%) in helmeted sports caused head accelerations less than a magnitude of 400 m/s2. However, a total of 11 concussions were diagnosed in players whose impacts caused accelerations between 600 and 1800 m/s2, with most of the 11 over 1000 m/s2.
Suppose that the magnitude of the head velocity change was 10 m/s. which time interval for the collision would be closest to producing a possible concussion with an acceleration of 1000 m/s2?
5bc. An airplane maintains a speed of 693 km/h relative to the air it is flying through as it makes a trip to a city 724 km away to the north. (Assume north is the positive y-direction and east is the positive x-direction.) What time interval is required if there is a tailwind with the same speed? (h) What time interval is required if there is a crosswind blowing at 32.4 km/h to the east relative to the ground? (h)
2. Lucas and Greyson are running a race. Lucas starts the race 10 m closer to the finish line than Greyson. However, they reached the finish line in exactly the same amount of time! Which runner had the higher speed? Explain why.
You are sitting in your car at a red light when you see a zombie standing still 65m in front of your car. You both begin to accelerate towards each other. Your car accelerates at 1.8 m/s^2 and the zombie accelerates at 0.6 m/s^2. How long does it take for you to strike the zombie?
Make sure to include a diagram of the physical situation, label know and unknown quantities with units, coordinate system.
Please use grade 12 kinematics and label the variables as v1, v2, a (Acceleration), t (time), d (displacement)
Thanks!
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