A rock rolls down a steep hill. it's initial velocity is 1 meter per second. by the time it reaches the bottom of the hill 30 seconds later, it's velocity is 7 meters per second. what is the acceleration of the rock?

Does an object in inelastic collisions exert less force than elastic collisions?

Explain the difference between mass and weight

In the simulation above, as the projectile travels upward, how does the vertical velocity change? Vertical velocity is zero. Vertical velocity increases. Vertical velocity remains the same. Vertical velocity decreases.

A 42.5 g piece of aluminum (which has a molar heat capacity of 24.03 j/ocmol) is heated to 82.4oc and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 j/goc) initially at 22.3oc.

The half life of radium 222 is 38 seconds if you had a 12 gram sample how much would be left after 72 seconds

Why cooking pans don't have have metal handles?

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band

How would you explain photosynthesis to a new student in class

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.