Suppose the moon orbit were not tilted how many total solar eclipses would u expect to see from earth in a year

What are the three ways that an object can accelerate

What object a collides with object b and bounces back its final momentum is?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?