Thus, the car will
reach the point Q after 4 seconds Also the distance travelled in 4 seconds is given by
x]t = 4 =
2
4
2
32
4
2
16
m
3
3
3




−
=
=








Rationalised 2023-24
 MATHEMATICS
178
Example 31 A water tank has the shape of an inverted right circular cone with its axis
vertical and vertex lowermost Its semi-vertical angle is tan–1(0 5)