Which will exert more pressure, 100 kg mass on `10m^2` or 50 kg mass `4m^2`? Give reason.

Which would require a greater force-accelerating a 2 kg mass at 5ms^-2 or a 4 kg mass at 2ms^-2 ?

Which has greater interita. A stone of mass 1 kg or a stone of mass 5 kg?

The earth's gravitational force causes an acceleration of 5m//s^(2) in 1 kg mass somewhere in space. How much will the acceleration of a 3 kg mass be at the same place? Give your answer with reason.

A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system ? Mass of the space ship = 1000 kg, mass of the sun = 2xx10^30 kg , mass of mars = 6.4xxl0^23 kg , radius of mars = 3395 km, radius of the orbit of mars = 2.28 x10^8 km , G = 6.67xx10^-11 N m^2 kg^-2 .

Which one requires more force, a body of mass 2 kg accelerated at the rate 5ms^(-2 ) or a body of mass 4 kg accelerated at 2ms^(-2) .

Compare the kinetic energies of two objects of masses 10 kg and 50 kg respectively but having same momentum.

A helicopter of mass 1000 kg rises with a vertical acceleration of 15 m s^-2 . The crew and the passengers weigh 300 kg. Give the magnitude and direction of the:- action of the rotor of the helicopter on the surrounding air,

A helicopter of mass 1000 kg rises with a vertical acceleration of 15 m s^-2 . The crew and the passengers weigh 300 kg. Give the magnitude and direction of the:- force on the floor by the crew and passengers,