Question

Please answer these physics MCQ's! I will mark the correct answers brainliest:)

Answer 1

Explanation:

Q. 6 answer: A) 60

Q. 7 answer: c) 40km/h towards North

Q. 8 answer: c) 0 km/h

if you need explanation comment it

Answer 2

Answer:

6) A. 60 7)C. 8) A.

Explanation:

6 --> average speed = Distance/ Time = d/t

Distance (d) = speed(s) x Time(t)

therefore total distance travelled= 60 x 0.52+ 30 x 0.24+ 70 x 0.71

= 88.1 = 88(approx.)

Therefore now we have distance. Now lets find average speed.

Total time= 0.52 + 0.24 + 0.71= 1.47 hour.

Average speed= 88.1/1.47= 59.863= 60(approx.)

ANSWER:- option A.

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7) Velocity= displacement/Time(t)

Time=5 hours

Distance/Displacement= 200 Km

Now, velocity= 200/5=40 km/h.

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ANSWER:-option c.

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8) average velocity = displacement/Time

Displacement= 250+250= 500

Time= 5+5= 10

velocity= 500/10 = 50km/h

answer:- option A.

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Hope your doubt is cleared.