There is a distinction between average speed and the magnitude of average velocity. Give an example that illustrates the differe
1 answer:
An instance that highlights the distinction is circular motion
Explanation:
Let's begin with the definitions of these two terms:
- Speed is a scalar quantity that measures "how quickly" an object moves, independent of its travel direction.
Speed can be calculated as:
where:
d is the distance covered
t is the time elapsed
- Velocity is a vector quantity defined as:
where;
d is the object's displacement (a vector connecting initial and final positions during motion)
t is the time taken
Since it is a vector, velocity incorporates both a magnitude and direction, hence taking into account the object's movement direction.
For straight-line motion, speed and velocity are equivalent. However, this isn't always true.
In reality, one scenario where these quantities diverge is in circular motion. For instance, when an object completes a full revolution around the circle, its average speed is calculated as the perimeter length (distance) divided by the time taken:
where r denotes the circle's radius.
Nevertheless, since the object's displacement returns to zero (as it goes back to the initial point), the average velocity equals zero:
Learn more about speed and velocity:
You might be interested in
Answer:
0.6
Explanation:
The formula for the volume of a sphere is
Thus
The radius of the disk is
Applying angular momentum conservation;
The of the sphere =
of the disk =
= 0.6
Response:
83.1946504051 m
Rationale:
u = Starting velocity =
s = Distance traveled =
= Incline =
Friction coefficient
The calculated stopping distance is 83.1946504051 m
Answer: small barrel gun
Explanation:
It is noted that short barrel guns have a higher muzzle velocity for bullets compared to longer barrel guns.
Acceleration is determined by the change in velocity with respect to time.
For short barrel guns, the bullet reaches its muzzle velocity more quickly, leading to greater acceleration than that of bullets from long barrel guns.