what is the difference between speed and acceleration........?

Answer 1

speed is the distance traveled divided by time traveled
i.e. miles per hour or feet per second
acceleration is the difference in speed divided by time
if the speed changed from 5 feet per second to 15 feet per second in 2 seconds then the acceleration would be [(15-5) feet/second] / 2 seconds or 10/2 feet per second per second = 5 feet per second squared

Answer 2

Two main differences:

- Speed is a scalar quantity (has no direction). Acceleration is a vector quantity (has a direction). The vector equivalent of speed is called velocity.

- Speed and velocity measure how fast your position is changing. Acceleration measures how fast your velocity is changing.

Here are some common examples:
- Driving in a car at 100 km/h: speed is 100 km/h, acceleration is 0.
- Taking off from a standstill: speed is 0, acceleration is high.
- Driving in a circle at a constant 40 km/h: speed is 40 km/h, velocity is always 40 km/h in magnitude but constantly changes direction (40 km/h east at one point, 40 km/h north at another, 40 km/h west at another, etc.), acceleration is also always the same magnitude but constantly changing direction.

Note that even though your speed is not changing in the last example, your acceleration is not 0. Acceleration is the rate at which your velocity is changing, and in this case the car's velocity is always changing direction.

Answer 3

SPEED...........
Speed is the rate of motion, or equivalently the rate of change of position, many times expressed as distance d moved per unit of time t.

Speed is a scalar quantity with dimensions distance/time; the equivalent vector quantity to speed is known as velocity. Speed is measured in the same physical units of measurement as velocity, but does not contain the element of direction that velocity has. Speed is thus the magnitude component of velocity.

In mathematical notation, it is simply:
v=d/t

ACCELOERATION..........
In physics or physical science, acceleration (symbol: a) is defined as the rate of change (or derivative with respect to time) of velocity. It is thus a vector quantity with dimension length/time². In SI units, acceleration is measured in meters/second² using an accelerometer.

To accelerate an object is to change its velocity, which is accomplished by altering either its speed or direction (like in case of uniform circular motion) in relation to time. In this strict mathematical sense, acceleration can have positive and negative values (deceleration).

Answer 4

SPEED tells how fast an object travels.It only includes magnitude and not the direction in which the object is moving.This means that every moving object has some speed.

ACCELERATION tells the change in speed of the object per unit time.It includes both- the magnitude of speed and the direction in which the object is moving.This means that even if the body is moving with constant speed(no change in speed)but its direction is continously changing, the body is being accelerated.eg:-in a circular motion.
Now, if the body is moving straight but changing its speed continously,then also it is being accelerated.
But in the case of speed we only see the magnitude and not the direction.

Answer 5

speed is how fast an object travels.it is given by the distance travelled in unit time interval,i.e.,speed=dist./time

acceleration is the rate at which velocity(speed) changes.
Acceleration takes into account the direction of motion also.
If speed remains same but direction changes rhen also body is said to be under acceleration.
acceleration is defined in terms of velocity,because velocity is a quantity which is defined in terms of both its magnitude(speed) and direction of motion of the object.
acceleration=vel./time

Answer 6

speed is change in distance for a given time. velocity is the same as
speed but with a direction. acceleration is the change in velocity with
respect to a given time.

Answer 7

Speed is how fast you go- acceleration is when you are at a particluar speed and increase the speed - there fore having acceleration=D

Answer 8

speed is distance per unit time.speed is different from velocity.
speed is scalar,velocity is vector.
Acceleration is rate of change in velocity.
units of speed are m/s.
units of acceleration are metre per second square.

Answer 9

speed can be an increasing velosity, decreasing velocity, or constant velocity...

acceleration is an increase in velocity, meaning constantly picking up speed

Answer 10

Speed - how fast you go in a constant matter of time

Acceleration - another word for gaining speed(physical equation= a=v/t)
(opposite is deceleration which means that you are loosing speed)