Oxy

A truck of mass 4×10^3 moving at 3.5 ms^-1 collides with a stationary truck to which it becomes automatically coupled. Immediately after the impact the trucks moves along together at 2 ms^-1 in the same direction. Find the mass of the second truck.

A small cart of mass 300g when emty can move freely on a horizontal surface. The cart contains 100g of sand and moves initially with speed of 18cm s^-1. a)what would be the speed of the cart if a further 200g of sand were dropped vertically into it from a...

A bullet of mass 20g is fired from a rifle of mass 4kg with a speed of 500ms^-1.Calculate the initial velocity of the recoil of the rifle.

A toy locomotive of mass 420g moving at 30cm s^-1 south collides with a carriage of mass 200g moving at 30cm s^-1 north. If they become couple together, what is their common velocity after the collision?

A block of mass 50kg was left to slide down a ramp elevated at an angle of 45 decrease as shown in the diagram below (assume g=9.8 ms^-2). I . Calculate the net force causing the block to slide down the ramp (assume no friction) II. Calculate the net forc...

I don't know the answer.I expect you guys to answer my question please,immediately.