Question

An object
object moves
along
a Semicircle of radius
3.2m in a time of
4 seconds Calculate
the average speed a average velocity of an
object​

Answer 1

Given:

• A semi-circle of radius = 3.2 m
• Time taken by object = 4 seconds

To find:

• Average speed of object = ?
• Average velocity = ?

Solution:

We know, velocity = Displacement/time.

Here, in circular motion the displacement is 2×pi×r.

Hence, the average velocity in circular motion = 2×pi×r/time

Since, it's a semi-circle so the velocity in circular motion will also be halved.

So, the final formula will be applied is:

$v \: = \: \frac{2\pi r}{t \times 2}$

(putting values for average velocity)...

$= = > \: \frac{2 \times 22 \times 3.2}{4 \times 2}$

$= = > \: \frac{11\times 32}{4 \times 5}$

$= = > \: \frac{88}{5}$

==> 17.6 m/s

Hence, the average velocity of the object = 17.6 m/s

Hope it was correct and helpful ans for u...

Answer 2

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