two carts are pushed apart by an expanding spring, as shown in the diagram. if the average force on the 1kg cart is 4N, what is the acceleration of each cart

we need to know the time interval during which the force acts. impulse of force = momentum change

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

answera compound;