A 4-kg ball is moving with a constant speed of 5 m/s in a horizontal circle whose radius is 0.50 m. What is the magnitude of the net force on the ball?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

Give an example in which the electrical energy changes to light energy