CBSE CLASS 9 | S. CHAND PHYSICS | MOTION | NUMERICALS | PART-3

Question 34 (b)
An ant travels a distance of 8 cm from P to Q and then moves a distance of 6 cm at right angles to PQ. Find its resultant displacement.

Question 37 (c)
Convert a speed of 54 km/h into m/s.

Question 39
The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?

Question 40
A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey .
Question 41
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds :
(a) What is its average speed ?(b) How far does it travel in 1 second ?(c) How far does it travel in 6 seconds ?
(d) How long does it take to travel 240 m ?
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