When a car accelerates from a standing start, a person appears to be pressed backward into the seat cushions. Which of the following best explains why this happens?
a. The person gets lighter as the car accelerates.
b. The car is moving forward faster than the person.
c. There is no reaction to the force of the car taking off.
d. Gravity is pulling the person in the direction the car is moving
2007-07-15 08:06:55 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Answer B. Gravity is downward force, not lateral. The weight of the person is constant. And there is reaction to force during acceleration.
2007-07-15 08:17:31 · answer #1 · answered by The Eagle Keeper 7 · 0⤊ 0⤋
B
except that you really need "accelerating" instead of "moving forward"
2007-07-15 08:24:01 · answer #2 · answered by rosie recipe 7 · 0⤊ 0⤋
B.
2007-07-15 08:14:59 · answer #3 · answered by regerugged 7 · 0⤊ 0⤋