An arrow is fired vertically upwards by a bow and reaches an altitude of 134m. find the initial speed of the arrow on the ground level.

While looking out the window, you see lightning flash and then two seconds later, you hear the thunder. How far was the lightening from you

The mass of the rock is 1220 kg. It had 400 J of potential energy when it rolled down the hill. calculate the heihht.

What are the three most important types of units in radiobiology? Explain the meaning of each.

What are visible colors of light has the longest wavelength?

If a force does not act parallel to the resulting displacement, what is the effect on the work done by the force?

What is the molecular geometry of a methane (CH4) molecule?

Why do scientist use radioactive decay to figure out how old stuff is

The power of a machine measures A. its rate of doing work. B. its strength. C. the force it produces. D. the work it does.

the acceleration of gravity is 28 times on sun than earth. Imagine there is a space suit that let you stand on sun. Calculate the weight of 100 kg person on earth in newtons

A force of 20 n acts upon a 5 kg block, calculate acceleration of the object