Agirl is out jogging at 1.75m/s and accelerates to 3.29m/s over a displacement of 295m. what was the girl’s acceleration?

a. 0.0132
b. 0.00261
c. -441
d. 383

What are similarities and differences between refraction, reflection, diffraction and absorption?

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?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.