Question 14 (1 point) Why are the layers of cells thicker in the esophagus that in areas further down the GI
tract?

to protect inner layers
to reduce friction
to retain more mucous
to provide more flexibility

Which lists the organs in the correct order as food passes from the mouth to anus?

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)