A cart A of mass 50 g moving at a speed of 20 km/h hits a lighter cart B of mass 20 kg moving towardsd it at a speed of 10 km/h. The two carts cling to each other. Find the speed of the combined mass after the collision.

Calculate momentum of a toy car of mass 300g moving with a speed of 18km//h .

A bus of mass 2400 kg is moving on a straight road with a speed of 30 km/h. A car of mass 1600 kg is following the bus with speed of 40 km/h. How fast is the centre of mass of the system of two vehicles moving?

A car of mass 400 kg and travelling at 72 km/h hits a truck of mass 4000 kg and travelling at 9 km/hr in the same direction. The car bounces bact at a speed of 18 km/h. What is the speed of the truck after the impact?

A vehicle of mass 30 quintals moving with a speed of 18km h^(-1) collides with another vehicle of mass 90 quintals moving with a speed of 14.4 km h^(-1) in the opposite direction. What will be the velocity of each after the collision?

A car of mass 1200 kg travelling with speed of 60 km/h on a straight road is ahead of a scooter travelling with speed of 60 km/h, then what will the speed of centre of mass of these vehicles? Mass of scooter is 80kg

A ship A is moving Westwards with a speed of 10 km h^(-1) and a ship B 100 km South of A, is moving Northwards with a speed of 10 km h^(-1). The time after which the distance between them becomes shortest, is :

A ship A is moving westwards with a speed of 10 km h^(-1) and a ship B 100 km south of A, is moving northwards with a speed of 10 km h^(-1) The time after which the distance between them becomes shortest, is