Question

1) A force of 210 N is needed to push a table across a level classroom floor for a distance of 2.8 m. How much work was done on the table?

2) Use g = 9.8 m/s².
If 4,090 J of work is used to raise a 118 kg crate to a shelf in a warehouse, how high was the crate raised?

3) Use g = 9.8 m/s².
A 66.2 kg student runs up a 5.25 m high stairway in a time of 4.40 seconds.How many watts of power did she develop?

4) What is the kinetic energy of a 45 gram bullet traveling at 200.0 m/s?

Answer 1

If you have any doubt, feel free to discuss in the comments.