A body is projected with an initial speed of `100sqrt3ms^(-1)` at an angle of `60^(@)` above t
Channel: Doubtnut
Date: 2020-02-09

A body is projected with an initial speed of `100sqrt3ms^(-1)` at an angle of `60^(@)` above the horizontal. If `g=10ms^(-2)` then velocity of the projectile a) is perpendicular to it�s acceleration at the instant `t=15 sec`. b) Is perpendicular to initial velocity of projection at `t=20 sec.` c) Is minimum at the highest point d) Changes both in magnitude and direction, during its flight.