If a ball is thrown straight up into the air with an initial velocity of 45 ft/s, it height in feet after t second is given by y=45t-16t2. Find the average velocity for the time period begining when t=2 and lasting. 0.1 seconds?

If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

An orchestra is practicing a piece that is to be played at an allegro tempo. The conductor sets a metronome at 160 beats per minute to keep everyone at the same pace. What is the period of a single beat

What is the net force acting on a falling object when it reaches terminal velocity?

Whick of the following is an advantage for a single celled organism (A it can become very large) (B it can reproduce quickly) (C it does not have to maintain its structure) (D it can tolerate all the environmental conditions)

A skydiver is in free fall. What is the only force acting upon the skydiver.

Think about the process of heating water, the heating and upward motion of hot steam and air, and the spiral spinning. For these events, list each form of energy associated with the heat source, the water, the steam and air, and the spiral.

A long rope with mass m is suspended from the ceiling and hangs vertically. A wave pulse is produced at the lower end of the rope, and the pulse travels up the rope.

What is the potential engery of a 150 kg diver standing on a diving board that is 10m high?

Identify the three controls on a automobile they are responsible for causing the car to accelerate

How is the energy of a nuclear reactor converted to electricity?