A boy weighs 40 kilograms. He runs at a velocity of 4 meters per second north. Which is his momentum?

A 235 kg motorcycle moves with a velocity of 7 m/s. What's it's kenetic energy?

Hermal energy is a form of ... A. Potential energy. B. Kinetic energy. C. Chemical energy.

How many grams of benzene, C 6 H 6, can be melted with 39.8 kJ of heat energy? The molar heat of fusion of benzene is 9.95 kJ/mol.

Why is a torque wrench necessary totighten bolts correctly on an engine head cover that sits on a gasket between it and the engine block? What might happen if a regular wrench is used to tighten the bolts?

What are some of the obstacles to exploration of outer planets or even Venus right next door? distance cost enough supplies and equipment for the trip all of the above coping with the extreme atmospheres

Woman pulls a 6.87 kg suitcase, initially at rest, with a 29.2 N force along the handle at 57.7º. Friction pulls back at 12.7 N, and the suitcase moves 5.93 m. What is its final speed? (Unit = m/s)

Suppose you know a golf ball's horizontal velocity and the time it has traveled through the air. how could you calculate how far the ball traveled

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m