CLASS 7 REVISION TIME AND MOTION

TIME AND MOTION

REVISION

1.A bus travels 54 km in 90 minutes. calculate the speed of the bus.

2.If we denote speed by S, distance by D and time by T, the
relationship between these quantities is

3.A spaceship travels 36,000 km in one hour. Express its speed
in m/s.
4.If Boojho covers a certain distance in one hour and Paheli
covers the same distance in two hours, who travels in a higher
speed?

4.A car covers a distance of 100 km in 5 hour, calculate its speed.

5.A pendulum takes 20 second to complete 10 oscillations, calculate its time period.

6.If a vehicle cover a distance of 5 km every hour and travels for 5 hours, the time distance time graph for the given vehicle can be plotted as follows using the table given below:

distance in km    5       10         15         20         25

time in Hour         1        2           3          4           5

7. Complete the following:

60 second = _____________

60 ___________ = 1 hour

___________ = 1 day

7 day = ______________

365 days = 1 year

1 Decade = _____________.