Aforce of 4 n produces an acceleration of 3 m/s^2 on an object of an unknown mass.
1. what is the mass of the object?
2. if the force is increased to 6 n, what is the acceleration?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?