Question

A particle moves in the east direction with 15m/ s for 2 sec then northeards with 5 m/ s for 8 sec. Avereage speed of the particle is?

Answer 1

Answer:

we know that average speed is equal to Total distance covered upon total time taken

<v>=70 divided by 10 which is equal to 7 and that is the average speed

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Answer 2

Answer:

7m/s

Explanation:

Avg speed = Total distance travelled / total time taken

As we know time = distance/speed

So, When particles moves in east direction the distance covered by the particle

Time × speed = distance

= 2×15 = 30

When particle moves in northwards direction

time× speed =distance

=8×5=40

Applying average speed formula

= 30+40/2+8 = 7m/s