An apple fell 4 m from the top of the tree to the ground in 0.9 s. what was its average speed?

a. 3.6 m/s

b. 4.0 m/s

c. 4.4 m/s

d. 4.5 m/s down

A 500-kg elevator is pulled upward with a constant force of 5500 n for a distance of 50.0 m. what is the work done by the weight of the elevator?

The mass of the most common isotope of an element is known based on an element's A. mass number B. average atomic mass C. atomic number B. number of electrons

What is a mixture in science class

Two identical cans, one filled with lead shot and the other with feathers, are dropped from the same height by a student standing on a chair. Which can, if either, experiences the greater force due to the gravitational attraction of the Earth?

What is most likely to occur when the sun moon and earth are alone in a straight line

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.

Consider the following distribution of objects: a 3.00-kg object with its center of gravity at (0, 0) m, a 4.20-kg object at (0, 6.00) m, and a 1.40-kg object at (1.00, 0) m. Where should a fourth object of mass 7.

A Volt/Amp Is Also Known As.?

What's the difference between mass & weight & how they are measured

Use the graph of distance versus time to complete the sentences. The cars on the higher track travel the cars on the lower track, in the same time. This means that the cars on the higher track have a average speed than those on the lower track.