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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
9.11 Problems on Time and Distance - I

Distance (d)= Speed(s) * Time(t)
If we convert kilometre per hour into metre per sec. we should multiply that with 5/18.
If we convert metre per sec. into kilometre per hour we should multiply that with 18/5.

Example:
If speed is 36 km/hr find the speed in metres per sec.?
Solution:
= 36*5/18 = 10 m/sec.


Directions: Solve the following problems. Also write at least 5 examples of your own.
Q 1: If speed is 45 km/hr find the speed in metres per sec.?
12 m/sec.
12.5 m/sec.
None of these
13.5 m/sec.

Q 2: If speed is 35 m/sec. find the speed in km/hr.?
126 km/hr.
125 km/hr.
None of these
125.5 km/hr.

Q 3: If speed is 17 m/sec. find the speed in km/hr.?
61 km/hr.
62.2 km/hr.
61.2 km/hr.
62 km/hr.

Q 4: If speed is 63 km/hr find the speed in metres per sec.?
16.5 m/sec.
None of these
17 m/sec.
17.5 m/sec.

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Question 6: This question is available to subscribers only!


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