plz help in question no 6,8,9,10
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Step-by-step explanation:
6). Average speed=12km/hr
Time =2hr 45 mins
=2+45/60
=2+3/4
=11/4hr
Therefore distance
travelled=speed×time
=12×11/4
=3×11
=33km
8). Convert km into meters
1 km = 1000 m
= 45000meters
Convert hours into second
1 hour = 3600 seconds
=> 45000/3600
=> 50/4 m/s
Distance = speed*time
=> 50/4*6
= 75meters
9). Convert km into meters
1 km = 1000 m
= 48000meters
Convert hours into second
1 hour = 3600 seconds
=> 48000/3600
=> 40/3 m/s
Time = distance/speed
=> 80/40*3
=> 2*3
=> 6 seconds
10). Convert km into meters
1 km = 1000 m
11km = 11000 m
1 minute = 60s
12minutes =12×60=720s
Speed =distance/time
=> 11000/720
=> 15.27m/s
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