You see lightning that is 1.6 km away. How long does it take for the light to travel to your eyes? How long does it take for the sound to travel to your ears?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Diamond will scratch quartz. true or false

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?