A student is investigating potential and kinetic energy by stretching a spring across a table when the student lets go the spring recoils

d) the number of neutrons plus the number of protons

in physics zero. in muscle fatigue could be high

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft