A 0.1 kg block is pressed against a horizontal spring fixed at one end to compress the spring through 5 cm. The spring constant is `100Nm^(-1)`. The groudn is 2 metre below the spring. Which of the followng are correct? (Take `g=10ms^(-2))`

Options

A. When released the block shal have a kinetic eneigy of 1/8
B. The initial horizontal velocity of the block is `sqrt(5//2)ms^(-1)`
C. The block shall reach the ground in `sqrt(2//5)` second
D. The block shall hit the ground at a horizontal distance of 1 metre from the free end of the spring.

Answer

A, B, C, D