What will be the change of velocity of a 50kg object if a force of 2,000N is applied to it for 0.010 seconds?

A1kg cart slams into a stationary 1kg cart at 2 m/s. the carts stick together and move forward at a speed of 1 m/sl. determine whether kinetic energy was conserved in the collision. use the law of conservation of energy to explain the collision

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

What are the north and south poles of a solenoid change with?