Is mechanical energy conserved as a playground swing moves? Why or why not?

You pull a shopping cart with the net force of 25 N to the left. your friend pulls the same one with the 25 N to the right. Describe the motion of the cart

Star Characteristic Questions What are the two things that stars are emitting into space?

A car accelerates uniformly from rest and reaches a speed of 21.5 m/s in 11.4 s. The diameter of a tire is 66.5 cm. Find the number of revolutions the tire makes during this motion, assuming no slipping. Answer in units of rev.

Como parte de una prueba de tiro vertical se lanza una roca, con una antigua catapulta romana, verticalmente hacia arriba con una velocidad inicial de 100m/s

Kenny and Candy decided to sit on a see-saw while visiting a local play park. Candy, of mass 50 kg, sat 250 cm from the pivot of the seesaw. (1).

Which of the following would be a good question that could be scientifically investigated? what is the best advice a parent can give a child what is the most appropriate number of dogs per household do cherry popsicles freeze slower than orange

Formulas (equations) : A = 3x and B = 5x + 1 As x increases, does A or B go up faster? if x=0, then A=? if x=1 then B=?

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

What two pieces of data indicates that uranus resides in the outer layer of the solar system.

What is acceleration? a. change in velocity/change in time b. change in distance/change in time c. change in mass/change in volume d. change in pressure/change in time