Cathy bens🐈

1.A 4kg ball moving at 8ms-1 collides with a stationary ball of mass 12kg,and they stick together.calculate the final velocity and kinetic energy lost in the impact. 2.when a person fires a rifle it is advisable to hold the butt firmly against the shoulde...

1.An elastic wire extend by 1.0cm when a load of 20g hangs from it.what additional load will be required to cause a further extension of 2.0cm? 2.A ball A of mass 0.4kg moving with velocity 5ms-1 collides head on with a ball B of mass 0.2kg moving with ve...

Simplify 1/√3+2 in the form of a+b√3?

Trump is 3 years older than Hillary. Seven years ago trump was twice as old as Hillary . i) how old are they now? ii) when will the sum of their ages be 45?

A water bath contains 15kg of water at 50°C. If hot and cold taps are turned on such that they deliver water at the rate of 30kg per minute. Determine the temperature of the mixture after 20minutes, if the temperature of the hot and cold water is 100°C an...