A student wants to use a spinning basketball to model the day and night cycle on Earth. What should the student do in order to best model the cause of the day and night cycle?

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n