A car travels with a constant velocity of 45km/hr for 20 seconds. What distance does it cover in this time.

HOLIDAY ASSIGNMENT

1. A boy cycles continuously through a distance of 1.0km in 5 minutes. Calculate his average speed.
   Solution
   1km = 1000m
   1 minutes =60 seconds
   5 minutes = 5×60 = 300 seconds
   Average speed = distance/time
   1000/300 = 3.33m/s
2. A car travels with a constant velocity of 45km/hr for 20 seconds. What distance does it cover in this time.
   Solution
   Conversion of units
   Velocity 45km/hr =( 45×1000)/(60×60) = 12.5m/s
   Distance = velocity×time
   12.5×20 = 250m