For an object to be in projectile motion, what force must be acting on it

A horizontal 800 N merry go round is a solid disk of radius 1.50 m, started from rest by a constant horizontal force of 50.0 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 3.00 s.

Which object has the greatest inertia? * 6-kg bag of feathers 5-kg rock 8-kg bowling ball 7-kg bag of groceries

The mass of a solid cube is 725 g, and each edge has a length of 6.35 cm. Find the density of the cube. Answer in units of kg/m3.

What is the energy conversion in a hair dryer? A. Heat energy to electric and mechanical energy B. Potential energy to electric and kinetic energy C. Electric energy to heat and kinetic energy D. Light energy to mechanical and electric energy

What is the measure of a change in an objects velocity?

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

A container of gas is at a pressure of 3.7 * 105 Pa How much work is done by the gas if its volume expands by 1.6 m3?

A person carries a mass of 10 kg and walks along the + x-axis for a distance of 100m with a constant velocity of 2 m/s. What is the work done by this person? A) 20 J B) None of the other choices is correct. C) 0 J D) 200 J

Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. how can that be?

What is velocity-time graph?