A boy with as mass of skates around a rink at a speed of 10 m/s expends 3000J of kinetic Energy.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Which changes of state do the labels represent? a: b: c:

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)