Is speed different from acceleration

Answer 1

Acceleration is the change of velocity while Velocity is the rate of change of displacement (position).

I-Edison of RSHS IX '10-'11

Answer 2

Velocity is the speed of an object in a given direction. So if a vehicle is travelling down a street at 30 miles per hour both its speed and velocity is 30 miles per hour. However, if it turns round and travels back at 30 miles per hour its speed is the same, but its velocity is now in the opposite direction and will therefore be minus 30 miles per hour (-30mph) Acceleration is the rate of change of velocity. So if a vehicle is travelling at a steady velocity of 10 metres per second, its acceleration is zero as the speed is steady and doesn't change. However, if it has an acceleratiion of 10 metres per second, every second, (or 10 metres per second per second or 10m/s/s) then every second it speeds up an extra 10 metres per second. this means that at constant velocity it is doing 10 metres per second. After the first second it speeds up to 10 + 10 or 20 metres per second, in the second second 20 + 10 or 30 metres per second, in the third second 30 + 10 or 40 metres per second and so on. Another example is a cyclist travelling at 5 metres per second and an acceleration of 3 metres per second per second. He accelerates thus: * At the start he is doing a constant velocity of 5 metres per second. * After 1 second he does an extra 3 metres per second so he is now doing 8 metres per second * After 2 seconds he does an extra 3 metres per second so he is now doing 11 metres per second. * After 3 seconds he does an extra 3 metres per second so he is now doing 14 metres per second. * After 4 seconds he does an extra 3 metres per second so he is now doing 17 metres per second and so on. Decelleration (or slowing down) is measured in the same way but amount slowed down is subtracted from the velocity instead of being added.

Answer 3

Velocity is a measure of speed at any one instant and acceleration is a measure of change in speed
Acceleration is defined as the rate at which velocity changes.

Constant velocity doesn't change, so it's a condition of zero acceleration.

Answer 4

Velocity is the rate at which location changes, and the direction

in which location changes.

Acceleration is the rate at which the size of velocity changes, and

the direction in which velocity changes.

Answer 5

Position is the place where an object is located.

Speed is the rate at which position changes.

Velocity is the speed and direction of motion.

Acceleration is the rate at which velocity changes, and the direction of the change.

So you could say that acceleration is the rate at which

(the rate at which position changes and the direction)

changes, and the direction of the change.

Answer 6

Speed is the how much velocity one has, regardless of the direction.

Acceleration is the change of velocity over time.

Answer 7

Speed is how fast you can go, acceleration is how long/short it takes to speed up