Question

The maximum height is reached in 5 seconds by a stone thrown vertically upwards and
moving under the equation 10s = 10ut - 497, where s is in metre and t is in second. The
value of u is
1) 4.9m/sec
2) 49m/sec
3) 98m/sec
4) None of these​

Answer 1

Answer:

1. 49m/sec. it is correct answer