How many seconds are there in one hour?
a) 60
b) 120
c) 3600
d) 86400
Calculation:1 hour= 60 mins
1 min = 60 s so 1 hour= 60 x 60
1 hour= 3600 s
1 km/h is equal to ………m/s.
a) 18/5
b) 5/18
c) 6/13
d) 9/22
Calculation:1 km=
1000 m 1 h= 3600 s
1 km/h= 1000km/3600s 1 km/h= 5/18 m/s
1 m/s is equal
to………km/h.
a)18/5
b)5/18
c) 6/13
d) 9/22
Calculation:1 m= 1/1000 km
1 s= 1/3600 h
1 m/s= 3600s/1000m
1 km/h= 18/5 km/h
Speedometer of the car measures its…speed.
a) total speed
b) average speed
c)instantaneous speed
d) all of these
Which of the following measures the total distance covered by a car?
a) speedometer
b) voltmeter
c) odometer
d) galvanometer
A cyclist moves 20 km in east for 1 hour and 10 k in north for 30 minutes to reach finish line. Find his average speed in km/h?
a) 15 km/h
b) 20 km/h
c) 25 km/h
Calculation:
total distance= 20km + 10km= 30 km
total time taken= 1 h + 30 min= 1.5h
average speed= total distance/total time
average speed= 30 km/1.5h
average speed= 20 km/h
by at 2025-01-22 09:51:39