A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

the universal law of gravitation states that the force of attraction between two objects depends on witch quantities?

How did the mechanical legs using to building robots reassemble the walking motions how are they different

One disadvantage of cloning is allows the continuation of species facing extinction new organisms are often sickly and do not live long lives scientists can study why nerve cells don't multiply scientists can study how organisms grow and reproduce

A submarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. What is the approximate pressure (water plus atmospheric) at this depth? (Recall that the density of seawater is 1025 kg/m3 g = 9.

Is the series equivalent resistor larger than either resistor, or is it smaller?

What are the main activities involved in studying physics?

What is the energy that moves your arms and legs

A moving object can be in equilibrium. Explain.

If gravity puts a force of 3N an object, how much force would it put on an second object that was twice as heavy

Where did the asteroids in the asteroid belt come from?