A rock falls off the edge of a cliff that is 145 m above the ground beneath it. For how long a time is the rock falling? Assume air resistance is negligible

Three hotels are located near each other along a popular beach. Hotel 2 decides to build a groin (out into the long shore current). Which of the other hotels will sue to stop the construction? A.

A ball is tossed upward to height of 10m and falls back to its original position the total trip up and down takes approximately 2s how long did it rise

The ability to transfer energy explosively into force is

Which statements does the Second Law of Thermodynamics support? 1. The usable energy in the universe is decreasing. 2. The usable energy in the universe is increasing. 3. The energy of the universe is being destroyed. 4.

Which of the following is mostly to be found in crystalline form? Concrete Glass Plastics Quartz

What units should be used when measuring the mass of a lady bug?

What happens if you don't wear your school uniform?

Velocity is the rate at which an object moves in a certain direction. what would cause a change in velocity?

The position of an object is given by x = at3 - bt2 + ct, where a = 4.1 m/s3, b = 2.2 m/s2, c = 1.7 m/s, and x and t are in SI units. What is the instantaneous acceleration of the object when t = 4.1 s?

A 0.25 kg baseball is in contact with a bat for 0.0075 s and exerts a force of 18,500 N. What impulse is delivered to the ball?