Suppose an object in free fall is dropped from a building. It's starting velocity is 0 m/s. What is the speed (in m/s) of the object after falling 2 seconds?

The compass of an airplane indicates that it is headed due north and its airspeed indicator shows that it is moving through the air at 240 km/hr. If there is a wind of 100 km/hr from west to east.

Which type of friction keeps a pile of rocks from falling apart?

What investigation doesn't involve hypothesis

In an area of the deep ocean, hot magma emerges from a crack in Earth's crust. Which statement describes what will happen to the seawater above the crack as a result of convection? Water molecules will break apart and flow in a circular pattern.

How does refraction cause wave crests to move when the waves approach the shore? A. at right angles to the shore B. about 80 degrees in relation to the shore C. nearly parallel to the shoreline D. about 45 degrees in relation to the shore

You drop a ball from a height of 2.0 m, and it bounces back to a height of 1.5 m. (a) what fraction of its initial energy is lost during the bounce? (b) what is the ball's speed just as it leaves the ground after the bounce?

Why do scientists prefer the moment magnitude scale to the richter scale?

A particle with a charge of - 5.10 nC is moving in a uniform magnetic field of B⃗ = - (1.20 T) k^. The magnetic force on the particle is measured to be F⃗ = - (3.30*10-7 N) i^ + (7.60*10-7 N) j^.

What is the pressure 100m below the surface of the sea, if the density of sea water is 1150kg/m3

The sum of three consecutive odd integers is - 27. A. {-7, - 9, - 11} B.{-10,-9,-8} C.{-5,-9,-13} D. {-11,-13,-15}