The calculation for kinetic energy is this
KE = 1/2mv^2
KE = 1/2(50)(7^2)
KE = 1/2(49•50)
KE = 1225 kgm^2/s^2.
Or simply 1225 J.
She possess this much energy when she runs.
Answer: C. Radio-controlled toy airplane
Explanation:
Just did the quiz
Probably because the earth is stationary rotating on its axis whereas the baseball is the one doing all of the movement after being thrown
Answer:
Removing some of the books reduced the mass of the box, and less force was needed to push it across the floor.
Average acceleration = (change in speed) / (time for the change) .
Average acceleration = (13.2 - 6) / (6.32) = 7.2 / 6.32 = about <em>1.139... m/s²</em> .
