A man X goes to the top of a building by a vertical spiral staircase. Another man Y of the same mass goes to the top of the same building by a slanting ladder. Which of the two does more work against gravity and why ?

From the ground floor a man comes up to the fourth floor of a building using a staircase. If the man comes up to the same floor using an elevator, neglecting friction, compare the work done by the man in the two cases.

A ball is dropped from the top of a building of height 80 m. At same instant another ball is thrown upwards with speed 50 m/s from the bottom of the building. The time at which balls will meet is

Two balls A and B of same masses are thrown from the top of the building A . Thrown upward with velocity V and B , thrown downward with velocity V , then

A ball is dropped from the top of a building 100 m high. At the same instant another ball is thrown upwards with a velocity of 40ms^(-1) form the bottom of the building. The two balls will meet after.

A particle is dropped from rest from the top of a building of height 100m. At the same instant another particle is projected upward from the bottom of the building What should be the speed of projection of the particle projected from the bottom of building so that the particle cross each other after 1s? Acceleration due to gravity is 10 m//s^(2) .

From the top of a building 96m high the angles of depression of two vehicles on a road at the same level and in the same line with the foot of the building and on the same side of it are x^(@) and y^(@) where tan x^(@)=(3)/(4) and tan y^(@)=(1)/(3) Calculate the distance between the vehicles.

A man runs across the roof-top of a tall building and jumps horizontally with hope of landing on the roof fo the bext building which is at a lower height than the first. If his speed is 9 m//s ,the (horizontal ) destanc hetween the two buildings is 10 m and height difference is 9 m , will he be able to land on the bext building ? (taken g=10 m//s^(2)).

There are two inclined planes with the same vertical height, but with different angles of inclination. Two bodies of mass m each are placed at the bottom of the inclined plane. Two external forces of equal magnitude do work in taking the bodies to the top of the inclined plane. Which force does more work?

In a children's park, there si a slide which has a total length of 10 and a height of 8.0 m figure. Vertical ladder are provided to reach the top. A boy weighting 200 N climbs up the ladder to the top of the slide and slides down to the ground. The averages friction offered by the slide is three tenth of his weight. Find a. the work done by the ladder on the boy as he goes up. b. the work done by the slide on the boy as he comes down. Neglect any work done by forces inside the body of the boy.