Practice
Exercise
Part A: Marks Based Questions
1.
Express 63km/h into m/s.
2.
Express 12.5 m/s into k/h.
3.
Raju travels at a speed at 12km/h. how much distance
will be cover in 4.5 s.
4.
A car is travelling at a speed of 50 km/h. how much
distance will it cover in 12 min?
5.
A train 360 m long is running at a speed of 45 km/h.
how much time will it take to cross a platform 140 m long?
6.
A train covers a distance 440 km in 5 h. find the
speed of the train in m/s.
7.
A car is travelling at an average speed of 60 km/h.
how much distance will it travel in 20 s?
8.
A car is moving at an average speed of 36km/h. how
much distance will it cover in 7 h?
9.
A train is 180 m long. If it runs at a speed of 90 km/h,
how long will it take to pass an electric pole?
10. A train 100m in length is running at
a speed of 72 km/h. what is the time taken by the train to cross a bridge of
length 525 m?
11. A train travelling at 60 km/h
crosses a lamp post it 6 s, calculate the time taken by it to cross a tunnel
350 m long.
12. Rachna cycles to her school at an
average speed at 12 km/hr, it takes her 20 min to reach the school. If she
wants to reach her school in 15 min, what should be her average speed?
13. Tanmay and laxman start walking from
a place A and B respectively, which are 10 km in opposite direction. If laxman
walks a speed of 2.5 km/h and tanmay at a speed of 1.5 km /h in how many time
will they be 18 km apart?
Also
find the distance travelled by laxman.
14. A motor car covers a certain
distance at 70 km/h and comes back to the starting point at 60 km/h. find his
average speed during the total journey.
15. A cyclist travels ‘x’ km in two and
half hours. Find the number of kilometer he can travel in ‘y’ min.
16. Two trains of length 280 m and 210 m
are travelling at the speed of 72 km/h and 54 km/h respectively on parallel
tracks. How long will it take to pass each other if they travel in the
respectively on parallel tracks and in the same direction?
17. A man can row upstream at 7 km/h and
downstream at 10 km/h. find mans rate in still water and the rate of current.