A ball is thrown upwards and it returns to ground describing a parabolic path. Which of the following remains constant
At the top of the trajectory of a projectile, the directions of its velocity and acceleration are
An object is thrown along a direction inclined at an angle of 45° with the horizontal direction. The horizontal range of the particle is equal to
The height y and the distance x along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by y=(8t-5t²) meter and x=6t meter, where t is in second. The velocity with which the projectile is projected is
The range of a particle when launched at an angle of 15° with the horizontal is 1.5 km. What is the range of the projectile when launched at an angle of 45° to the horizontal
A cricketer hits a ball with a velocity 25m/s at 60° above the horizontal. How far above the ground it passes over a fielder 50m from the bat (assume the ball is struck very close to the ground)
A stone is projected from the ground with velocity 25m/s. Two seconds later, it just clears a wall 5 m high. The angle of projection of the stone is (g=10m/sec²)
Galileo writes that for angles of projection of a projectile at angles (45+θ) and (45-θ) , the horizontal ranges described by the projectile are in the ratio of (if θ≤45)
A projectile thrown with a speed v at an angle θ has a range R on the surface of earth. For same v and θ , its range on the surface of moon will be
The greatest height to which a man can throw a stone is h . The greatest distance to which he can throw it, will be
The horizontal range is four times the maximum height attained by a projectile. The angle of projection is
A ball is projected with kinetic energy E at an angle of 45° to the horizontal. At the highest point during its flight, its kinetic energy will be
At the top of the trajectory of a projectile, the acceleration is
A football player throws a ball with a velocity of 50 metre/sec at an angle 30 degrees from the horizontal. The ball remains in the air for (g=10m/s²)
A body of mass 0.5 kg is projected under gravity with a speed of 98 m/s at an angle 30° of with the horizontal. The change in momentum (in magnitude) of the body is
A gun is aimed at a target in a line of its barrel. The target is released and allowed to fall under gravity at the same instant the gun is fired. The bullet will
If time of flight of a projectile is 10 seconds. Range is 500 meters. The maximum height attained by it will be
If a body A of mass M is thrown with velocity V at an angle of 30° to the horizontal and another body B of the same mass is thrown with the same speed at an angle of 60° to the horizontal. The ratio of horizontal range of A to B will be
A bullet is fired from a cannon with velocity 500 m/s. If the angle of projection is 15° and g=10m/s² . Then the range is
A ball thrown by a boy is caught by another after 2 sec. some distance away in the same level. If the angle of projection is 30o, the velocity of projection is
A particle covers 50 m distance when projected with an initial speed. On the same surface it will cover a distance, when projected with double the initial speed
A ball is thrown upwards at an angle of 60o to the horizontal. It falls on the ground at a distance of 90 m. If the ball is thrown with the same initial velocity at an angle 30o, it will fall on the ground at a distance of
Four bodies P, Q, R and S are projected with equal velocities having angles of projection 15o, 30o, 45o and 60o with the horizontal respectively. The body having shortest range is
For a projectile, the ratio of maximum height reached to the square of flight time is (g = 10 ms–2)
An object is projected with a velocity of 20 m/s making an angle of 45o with horizontal. The equation for the trajectory is h = Ax – Bx2 where h is height, x is horizontal distance, A and B are constants. The ratio A : B is (g = 10 ms–2)
