Four particles A
A cart is moving horizontally along a straight line with constant speed 30ms^−1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80m. At what speed (relative to the cart) must the projectile be fired? (Take g=10ms^−2)
20
Oct
A cart is moving horizontally along a straight line with constant speed 30ms^−1. A particle is to be fired vertically upwards from the moving cart in such a way that it returns to the cart at the same point from where it was projected after the cart has moved 80m. At what speed (relative to [...]
Six particles situated at the corners of a regular hexagon of side a move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. The time the particles will take to meet each other.
20
Oct
Six particles situated at the corners of a regular hexagon of side a move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. The time the particles will take to meet each other. B B along BC C along CD and D along DA. At which time [...]
Four particles A, B, C and D are situated at the vertices of a rectangle of sides d at t = 0. Each of the particle moves with constant speed v. A always has its velocity along AB, B along BC, C along CD and D along DA. At which time will the particles meet each other ?
20
Oct
Four particles A, B, C and D are situated at the vertices of a rectangle of sides d at t = 0. Each of the particle moves with constant speed v. A always has its velocity along AB, B along BC, C along CD and D along DA. At which time will the particles meet [...]