A 2.0 kg block on an incline at a 60.0 degree angle is held in equilibrium by a horizontal force, what is the magnitude of this horizontal force (disregard friction) ?

A train travels from the of a hill to the top of a hill. It moves slower by the time it reaches the top. This is an example of

What happens when the density of a medium increases

2. Two toy cars are involved in a race. Car A has mass m while car B has mass 2m. a. The two cars have the same force applied to them over a distance of 1 meter.

A train car with mass m1 = 590 kg is moving to the right with a speed of v1 = 7.3 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 4.7 m/s.

Every year the Earth travels about 109km as it orbits the Sun. What is Earth's average speed in km/h?

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False