if an object is moving at a constant speed, the forces acting on it must be ___. Another way to say this is that the net force = __.

When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 73.0 kg man just before contact with the ground has a speed of 6.

When applying the process of science which of theseis tested 1. a question, 2. an observation, 3. a conclusion, 4. a prediction

a 2,000-kilogram railroad car moving at 8m/s to the right collides with a 6,000-kilogram railroad car moving at 3m/s to the west. If the cars couple together, what is their velocity after the collision?

How to convert specific heat capacity from kelvin to celsius?

The ozone the unearths surface from the dangerous radiation. This is an interaction between

If one newton of force accelerates a block at 1m/s^2. predict what the acceleration would be if we applied twice the force to a very light container with 4 blocks in it

What is the difference between an ordinary piece of iron and iron magnet?

The cooled lava pools on the surface of a crater are called what? 1. Craters 2. Terrae 3. Maria 4. Reoglith

Discuss how electromagnets have been created that are strong enough to pick up cars in a wrecking yard and are able to be switched off, dropped the cars onto a scrap pile to be crushed.

A block with mass m1 = 9.4 kg is on an incline with an angle θ = 25° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.22 and μs = 0.242.