A boy drops a stone from a cliff, which reaches the ground in 20 seconds. Calculate the height of the cliff.

Diffrence between vector and scalar

In which type of wave does the medium move parallel to the direction of the energy transport?

Whats an equation for the volume of a cylinder

A hot air balloon is flying above Grovenburg. To the left side of the balloon, the balloonist measure the angle of depression to the Groveburg soccer fields to be 20 degrees 15'.

technician A says oil is primarily used to collect contaminants and carry them to the oil filter. Technician B says a breakdown in lubrication occurs on cold startup. Who is correct?

A child is sliding down a slide at the playground. Is the mechanical energy conserved? Why or why not? The mechanical energy is conserved. There is as much KE at the end as there was PE at the beginning. The mechanical energy isn't conserved.

Which term refers to the rate at which the velocity of a moving object changes? A. acceleration B. displacement C. resonance D. turbulance

This is a number, as of years, days, minutes, or seconds representing such an interval. The SI standard unit of this is the second.

What is the name of the person who created kinematics?

If the mass of a material is 114 grams and the volume of the material is 16 cm squared 3, what would the density of the material be?