Q.32(b):- Shows that the projection angle θ0 for a projectile launched from the origin is given by θ0 = tan-1(4hm / R) where the symbols have their usual meaning. Answer:- Maximum…

Q.32(b):- Shows that the projection angle θ0 for a projectile launched from the origin is given by θ0 = tan-1(4hm / R) where the symbols have their usual meaning. Answer:- Maximum…

Q.32(a):- Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by θ(t) = tan-1((v0y– gt) / v0x) Answer:- (a)…

Q.31:- A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed…

Q.30:- A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 km/h passes directly overhead an anti-aircraft gun. At what angle from the vertical should the gun…

Q.29:- A bullet fired at an angle of 30° with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target…

Q.28:- Can you associate vectors with (a) the length of a wire bent into a loop, (b) a plane area, (c) a sphere ? Explain. Answer:- (a) No, one cannot…

Q.27:- A vector has both magnitude and direction. Does it mean that anything that has magnitude and direction is necessarily a vector ? The rotation of a body can be specified…

Q.26:- A vector has magnitude and direction. Does it have a location in space ? Can it vary with time ? Will two equal vectors a and b at different locations…

Q.25:- An aircraft is flying at a height of 3400 m above the ground. If the angle subtended at a ground observation point by the aircraft positions 10.0 s apart is 30°,…

Q.24:- Read each statement below carefully and state, with reasons and examples, if it is true or false : A scalar quantity is one that (a) is conserved in a process…