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A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height d/2. Neglecting subsequent motion and air resistance, its velocity v
25
Sep
A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height d/2. Neglecting subsequent motion and air resistance, its velocity v A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a [...]
In 1.0 s, a particle goes from point A to point B, moving in a semicircle of radius 1.0 m (Fig.A,48). The magnitude of the average velocity is
25
Sep
In 1.0 s, a particle goes from point A to point B, moving in a semicircle of radius 1.0 m (Fig.A,48). The magnitude of the average velocity is 48). The magnitude of the average velocity is a particle goes from point A to point B In 1.0 s moving in a semicircle of radius 1.0 [...]
A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest possible path in 15 min. The velocity of the river water in km/h is
25
Sep
A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest possible path in 15 min. The velocity of the river water in km/h is A boat which has a speed of 5 km/h in still water crosses a river of width 1 km [...]
A river is flowing from west to east at a speed of 5 m per min. A man on the south bank of the river, capable of swimming at 10 m per min in still water, wants to swim across the river
25
Sep
A river is flowing from west to east at a speed of 5 m per min. A man on the south bank of the river, capable of swimming at 10 m per min in still water, wants to swim across the river A river is flowing from west to east at a speed of 5 [...]
A particle is moving eastwards with a velocity of 5 m/s. In 10 s, the velocity changes to 5 m/s northwards. The average acceleration in this time is
25
Sep
A particle is moving eastwards with a velocity of 5 m/s. In 10 s, the velocity changes to 5 m/s northwards. The average acceleration in this time is A particle is moving eastwards with a velocity of 5 m/s. In 10 s the velocity changes to 5 m/s northwards. The average acceleration in this time [...]
A projectile fired from the ground follows a parabolic path. The speed of the projectile is minimum at the top of its path.
25
Sep
A projectile fired from the ground follows a parabolic path. The speed of the projectile is minimum at the top of its path. A projectile fired from the ground follows a parabolic path. The speed of the projectile is minimum at the top of its path. September 25, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
Two balls of different masses are thrown vertically upwards with same speed. They pass through the point of projection in their downward motion with the same speed
25
Sep
Two balls of different masses are thrown vertically upwards with same speed. They pass through the point of projection in their downward motion with the same speed Two balls of different masses are thrown vertically upwards with same speed. They pass through the point of projection in their downward motion with the same speed September [...]
The trajectory of a projectile in a vertical plane is y = ax – bx^2, where a, b are constants, and x and y are, respectively, the horizontal and vetical distances of the projectile from the point of projection.
25
Sep
The trajectory of a projectile in a vertical plane is y = ax – bx^2, where a, b are constants, and x and y are, respectively, the horizontal and vetical distances of the projectile from the point of projection. and x and y are b are constants respectively the horizontal and vetical distances of the [...]
Spotlight S rotates in a horizontal plane with constant angular velocity of 0.1 rad/s. The spot light P moves along the wall at a distance of 3 m. The velocity of the spot P when theta = 45
25
Sep
Spotlight S rotates in a horizontal plane with constant angular velocity of 0.1 rad/s. The spot light P moves along the wall at a distance of 3 m. The velocity of the spot P when theta = 45 Spotlight S rotates in a horizontal plane with constant angular velocity of 0.1 rad/s. The spot light [...]
Four persons K, L, M, N are initially at the four corners of a square of side d. Each person now moves with a uniform speed v in such a way that K always moves directly towards L, L directly towards
25
Sep
Four persons K, L, M, N are initially at the four corners of a square of side d. Each person now moves with a uniform speed v in such a way that K always moves directly towards L, L directly towards Four persons K L L directly towards m N are initially at the four [...]