Question

1. The speed of acyclist is 4 m/sec. Calculate the speed in km/hr.

2 fit takes 3 hours to drive a distance of 192km on a motorway, what would be your average speed in m/s?

3.A car covers a distance of 100 km i first two hours, 120 km in next 1hour and 32 km in next 1/2 hour. Calculate the average speed of the carin km/h and m/s.

4. The odometer of a car reads 57321.0km when the clock shows the time 08:30 AM. What is the distance moved by the carifat 08:50 AM, the odometer reading ahs changed to 57336.0km? Calculate the speed of the car in km/min during this time. Express the speed in km/h also.​

Answer 1

Answer:

1:

14.4 km/h

Explanation:

1:

speed in m/sec=4m/sec

speed in km/h =?

1m =1/1000km

1sec=1/3600h

so

speed =d/t

d=4m

t=1sec

1m =1/1000km

1sec=1/3600h

d=4/1000km

t=1/3600min

speed=4/1000/1/3600

=14.4km /hour