The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s isJ.

A plane traveling north at 100.0 km/h through the air gets caught in a 40.0 km/h crosswind blowing west. This turbulence caused a beverage cart to brake free and begin rolling at 20.0 km/h toward the tail of the plane.

A railroad car of mass m is moving at speed v when it collides with a second railroad car of mass m which is at rest. the two cars lock together instantaneously and move along the track. what is the speed of the cars immediately after the collision?

P-waves and S-waves are also known as a. surface waves. b. ground waves. c. transverse waves. d. seismic waves.

How would the tides on earth be different if the moon revolved around the earth in 15 days instead of 30 days

A worker stands still on a roof sloped at an angle of 35° above the horizontal. He is prevented from slipping by static frictional force of 560 N. Find the mass of the worker.

The path of a beam of light from the sun to your eye when you are wearing sunglasses

The element that is most abundant in earth is

What is true about coal as an energy source

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.