a. gravity
b. inertia
2006-10-07 16:58:49 · 23 answers · asked by green eyed monster 2 in Education & Reference ➔ Homework Help
The answer is B: inertia. Inertia is the name given to Newton's law of motion regarding bodies at rest or in motion.
I've read all of the other answers and some got it right, but no one said WHY. The why is Sir Isaac Newton, who stated the laws of motion, one of which says a body in motion tends to stay in motion unless acted on by an outside force (or the corrollary, a body at rest tends to stay at rest unless acted on by an outside force). In the case of the car traveling at speed, you and the car are traveling in concert, together. When the car accelerated, you felt a force pushing you back into the seat. You were at rest and tended to stay at rest until acted on by the car accelerating, so you felt the force pushing you into the seat and then because the seat (car) pushed back, you accelerated with the car. Likewise, when decelerating, your body in motion tended to stay in motion until restrained by the seat belt as the car decelerated. Outside forces acted on you to push you into the seat, and then later tended to fling you forward as the car decelerated until restrained by the seat belts.
Simple, Newton's laws of motion put into practice caused you to lean forward when the car decelerated. Simple physics...
2006-10-07 18:10:50 · answer #1 · answered by rowlfe 7 · 0⤊ 0⤋
inertia & kinectic energy. can be call momentum too.
when u drive 60mph, u n your car, both, r travelling at 60 relative to the road. so when u hit the brakes, your car stop... and u feel that your body leans forward as well.... cuz your body was going at 60 before u hit the brakes. actually, everything in your car is travelling at 60. your can of soda, your CDs, bags, car seats, engine etc etc.... so when u hit the brakes, all those which r bolted on to the car will not move. but loose things will fly up to the front....
but pls do your revision by reading your books dont post a question here n expect a good samaritan to give u the answer dear... :)
2006-10-08 00:06:57 · answer #2 · answered by son70 2 · 0⤊ 0⤋
The answer is b. inertia. The reason for that is because your brain doesn't have to adjust your body to a car. So when it comes to a sudden stop, your body is still in motion and that is why you will lean forward, but it takes a split second for the brain to adjust to a new position.
2006-10-08 00:04:05 · answer #3 · answered by russianguyfrombrooklyn 2 · 0⤊ 0⤋
good ol inertia. gravity would be the reason u go splat on the asphalt when jumping off a building
2006-10-08 00:07:18 · answer #4 · answered by Gahhhhhh 3 · 0⤊ 0⤋
because of inertia... the driver's tendency to change the state of rest (in this case!) causes the driver to move forward
2006-10-08 00:09:10 · answer #5 · answered by I need a vacation! 4 · 0⤊ 0⤋
How's that go.... A body in motion, continues to stay in motion unless acted upon by an outside force? What is that...Murphys or Newtons Law?
2006-10-08 00:08:17 · answer #6 · answered by frigidx 4 · 0⤊ 0⤋
Inertia1 Newtons 3rd Law of relativity, for every action their is an equal reaction? As long as friction and wind resistance is not taken to consideration.
2006-10-08 00:12:53 · answer #7 · answered by Man11 1 · 0⤊ 0⤋
I think it is b. inertia, because gravity pulls you down.
2006-10-08 00:00:44 · answer #8 · answered by Anonymous · 1⤊ 0⤋
inertia. gravity only pulls you down
2006-10-08 00:01:59 · answer #9 · answered by chapped lips 5 · 0⤊ 0⤋
inertia
2006-10-08 00:04:24 · answer #10 · answered by jennabeanski 4 · 0⤊ 0⤋