## Shows that the projection angle θ0 for a projectile launched from the origin is given by θ0 = tan-1(4hm / R) | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## 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) | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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)…

## 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 at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## 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 be fired for the shell with muzzle speed 600 m s-1 to hit the plane ? At what minimum altitude should the pilot fly the plane to avoid being hit? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## 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 5.0 km away? Assume the muzzle speed to the fixed, and neglect air resistance. | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## Can you associate vectors with (a) the length of a wire bent into a loop, (b) a plane area, (c) a sphere ? Explain. | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## 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 by the direction of the axis of rotation, and the angle of rotation about the axis. Does that make any rotation a vector? | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…

## 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 in space necessarily have identical physical effects ? Give examples in support of your answer | Learn NCERT solution | Education portal Class 11 Physics | Study online Unit-4 Motion In A Plane

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…