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.

A body is projected with an initial speed of 100 sqrt(3) ms^(-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. Mark the answer as.

A body is projected with an initial speed of 100sqrt(3) ms^(-1) at an angle of 60° above the horizontal. If g = 10 ms^(-2) then velocity of the projectile a)is perpendicular to its acceleration at 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. Mark the answer as

A particle is projected with a velocity of 20sqrt(3) ms^(-1) at an angle of 60^(@) to the horizontal. At the moment, the direction of motion of the projectile is perpendicular to the direction of initial velocity of projection, its velocity is

A particle is projected with a velocity of 20sqrt(3) m s^(-1) at an angle of 60^(@) to the horizontal.At the moment,the direction of motion of the projectile is perpendicular to the direction of initial velocity of projection, its velocity is?

A body is projected with an initial Velocity 20 m/s at 60° to the horizontal. Its initial velocity vector is- (g=10 m//s^2 )

A body is projected with an initial Velocity 20 m/s at 60° to the horizontal. Its initial velocity vector is- (g=10 m//s^2 )