Question

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14.A cyclist travels a distance of 4 km from P to Q and then moves a distance of 3
km at right angle to PQ. Find his displacement.
45. Distinguish between uniform and non uniform acceleration.
46.A person moves a distance of 3 km towards east, then 2 km towards north and 2
3.5 km towards east. Find (a) distance covered by the person (b) displacement.
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47.A train 100 m long is to cross a river bridge of length 800 m. What time will it
take to cross the bridge? Given that the train moves with a constant velocity of 36
km/h.
48.On a 120 km track a train travels the first 30 km at a uniform speed of 30 km/h. 2
Calculate the speed with which the train should move rest of the track so as to
average 60 km/h for the entire trip.
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49. A train leaves New Delhi railway station at 9:00 a.m. and reaches Jaipur, which
is at a distance of 260 km at 12:45 p.m. The train reaches Alwar (at distance 150
km from New Delhi) at 11:30 a.m. and stops for 15 minutes.
(a) What is the reference point for motion of the train?
(b) What is the average speed of the train between Alwar and Jaipur?
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Answer 1

Answer:

this question is very long I can't read this