instead of saying that the car is accelerating?
2006-11-08 22:00:44 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Physics
scientifically you can say it but with regard to saving energy, you can not:
increase speed ======= 2 words
accelerate ======= 1 word
Save energy by using accelerate instead of increase speed
2006-11-09 00:42:41 · answer #1 · answered by Ormoz 3 · 0⤊ 1⤋
Acceleration is the rate of change of velocity.
Velocity is a vector Quantity. It has both size and direction. a force is needed to change the velocity.
A car is accelerating if it changes in either speed or direction or both.
The brake and accelerator provide forces that make the car go slower or faster. The steering wheel provides the force that makes the car turn.
A car driving at a constant speed is accelerating as the direction of its motion is constantly changing. ( velocity has BOTH size and direction - this is a definition at the top of the page
If the car is increasing in speed in a straight line (foot on the accelerator, steering wheel held straight), that is a special case of acceleration in which only the speed changes, not the direction.
Negative acceleration is when the car goes slower (foot on the brake)
Hope this helps
2006-11-08 22:15:03 · answer #2 · answered by rosie recipe 7 · 0⤊ 2⤋
Acceleration is not change of speed but is the change of velocity so we can not say when the car is accelerating that the speed of car is increasing because its speed ( which is magnitude of the vector velocity) may be constant but the direction of velocity vector might be changing resulting in acceleration of car. So when the car is accelerating it is better to say that it's velocity is increasing but we can say the speed is increasing when the car is accelerating in a constant direction.
2006-11-08 22:07:12 · answer #3 · answered by Anonymous · 0⤊ 2⤋
you may say that the car is increasing in speed...
easy to understand...
but acceleration is a vector quantity, to say that a body may change in its speed and or direction...
to say that it is increasing in speed it may be that the car moves in a straight line and gaining or loosing speed....
when the car is accelerating, it changes also it's direction like when a car moves in a circle even with constant speed...
acceleration also speaks of a positive or negative acceleration (which also known as deceleration....)
2006-11-09 04:09:12 · answer #4 · answered by dumb-sel in distress 3 · 0⤊ 1⤋
Acceleration is not barely the change in speed, but is the RATE of change in speed.
Well, the statement "the car is accelerating" is correct. Why?
Acceleration changes when:
Velocity changes, time changes, or BOTH changes.
2006-11-08 23:19:46 · answer #5 · answered by Ryan 3 · 0⤊ 2⤋
Acceleration is change in velocity.
Speed can stay the same even though you are accelerating - for instance, going round a corner.
2006-11-08 22:05:04 · answer #6 · answered by Anonymous · 0⤊ 2⤋
because we keep track about the speed using the speedometer and not the acceleration
2006-11-08 22:12:34 · answer #7 · answered by stranger 1 · 0⤊ 1⤋
of maintaining the status quo....staying the same...
wtf
u malakismeno plasma...hameno...stornarie....vlameno...
what....
2006-11-08 22:32:26 · answer #8 · answered by 67ImpalaSS 3 · 0⤊ 2⤋
you can say anything you want kin f though it might not be correct.
2006-11-08 22:19:22 · answer #9 · answered by Grev 4 · 0⤊ 2⤋
yes you can say that. it does make sense.
2006-11-08 23:39:29 · answer #10 · answered by simon r 3 · 0⤊ 1⤋