A 20kg ball is rolling at a speed of km/s. how much is the kinetic energy?

As recently as 2010, 60% of drug overdoses were caused by what? select one: a. methb. cocainec. prescription drug abused. heroin

You drop some ice and notice a piece appears to slide across the kitchen floor without slowing down (until it hits the wall). what kept the ice moving at a fairly constant speed? a. force b. inertia c. momentum d. kinetic energy

At what height does a 1000 kg mass have a potential energy of 1j relative to the ground

Water leaks out of a tank through a square hole with 3-inch sides. at time t (in seconds) the velocity of water flowing through the hole is v ft/sec (where v is a function of time, t).

A boy and his skateboard have a combined mass of 65 kg. What is the speed of the boy and skateboard if they have a momentum of 275 kg •?

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.