Height of the body from the ground can be calculated by using the formula h=-ut+(1//2)gt^(2) in (a) A body projected vertically with velocity in .t. sec. (b) A body dropped from a ballon moving up with uniform velocity, reahces the ground in .t. sec. (c) A body dropped from a helicopter moving upwith uniform velocity, reaches the ground in .t. sec. (d) A body projected vertically from the ground reaches the ground in .t. sec.

Height of the body from the ground can be calculated by using the form

1.	Height of the body from the ground can be calculated by using the formula h=-ut+(1//2)gt^(2) in (a) A body projected vertically with velocity in .t. sec. (b) A body dropped from a ballon moving up with uniform velocity, reahces the ground in .t. sec. (c) A body dropped from a helicopter moving upwith uniform velocity, reaches the ground in .t. sec. (d) A body projected vertically from the ground reaches the ground in .t. sec.
Answer» a, B and C are correct a, b, c and d are correct a is only correct b and d are correct Answer :A