The Sun is about 150 million km from earth. how long does it take light from the sun to reach earth? (Speed of light is 3x10^8m/s)

What is an oscillation or disturbance that travels through space called?

Which is an example of projectile motion? a person throwing a rock a child swinging on a swing set an athlete running on a track a teacher picking up a pencil

A worker pushed a 27kg block 9.2 m along a level floor atconstant speed with a force directed 32o below thehorizontal. If the coefficient of kinetic friction betweenblock and floor was 0.

A car travels at an average speed of 65 mph for 10 hours how far did it travel A 65 miles. B 650 miles 10. Miles 6500 miles

What can convert electricity into mechanical energy? A. an electromagnets B. a compass C. a generator D. a motor

A car's position in relation to time is plotted on the graph. What is the car's average velocity for segment C? A) - 4 m/s B) - 0.25 m/s C) 0.25 m/s D) 4 m/s

What percent of my Iodine-131 sample will be left after 7 half-lives?

A 58.0 kg snow skier is on the top of 351 m high hill. After she has gone down a vertical distance of 142 m, what is her mechanical energy? Explain your answer (CER) !

A sphere has a mass of 2.10kg and travels along a horizontal plane at the velocity of 12.2m/s. Find the energy

What is the force required to accelerate a baseball with a mass of 0.145 kilograms and an acceleration of 35.00 meters/second squared?