1.Define acceleration
and State its SI unit.

2.What do you mean by
Instantaneous velocity?

3.The Density of
water in CGS system is 1 g/cc ,Write its unit in Kg/m

^{3}
4.What is a light
year?

5.Differeiate between
Absolute error and elative error?

6. A mass initially at O, first moves
5m to the right and then 12m to the left .What is the total distance covered by
the mass and what is its change in displacement?

7.A car 4.0m long is moving to the
left. It is observed that it takes 0.10 s for the car to pass a given point on
the road. What is the speed and velocity of the car at this instant of time?

8. An object has a displacement of -5m.It moves a distance
to the right equal to 15m and then a distance of 10m to the left. What is the
total distance travelled and final displacement of the object? What is the
change in displacement of the object?

9.A car of length 4.2 m travelling in a straight line takes
0.56 s to go past a mark on the road. What is the speed of the car?

10.A car starts out from O in a straight line and moves a
distance of 20 Km towards the right, and then returns to its starting position
1 hr later.what is the average speed and the average velocity of the trip?