Raj meets Jene after several years and is immediately attracted to her. Raj has a mass 50 kg and Jene has a mass 42kg and initially they are separated by 5m. Is their attraction purely physical.

Find the gravitational force between a man of mass 50 kg and a car of mass 1500 kg separated by 10 m.

Two astronauts have deserted their spaceship in a region of space far from the gravitational attraction of any other body. Each has a mass of 100 kg and they are 100 m apart. They are initially at rest relative to one another. How long will it be before the gravitational attraction brings them 1 cm closer together?

A body has a mass M kg on the earth .What will be its weight on the earth ?

Two carts (A and B), having spring bumpers, collide as shown. Cart A has a mass of 2 kg and is initially moving to the right. Cart B has a mass of 3 kg and is initially stationary. When the separation between the carts is a minimum :

Calculate the gravitational force of attraction between a car of mass 600 kg and a bike of mass 100 kg separated by a distance of 20 m

Two ice skaters A and B approach each other at right angles. Skater A has a mass 30 kg and velocity 1 m/s and skater B has a mass 20 kg and velocity 2 m/s. They meet and cling together. The final velocity of the couple is

Two balls approaching each other along two perpendicular directions and collide at the intersection. After the collision, they stick together. If one ball has a mass of 14.5 kg and an initial speed of 11.5 m//s and the other has a mass of 17.5 kg and an initial speed of 15.5 m//s , what will be their speed and direction immediately after impact ?

5 litres of alcohol has a mass of 4 kg. The density of alcohol is __

A bicycle wheel of radius 0.3 m has a rim of mass 1.0 kg and 50 spokes, each of mass 0.01 kg. What is its moment of inertia about its axis of rotation ?