Question

Help please
1) A 30-kg object is accelerated at a rate of 3 m/s². How much force does the object have?

2) Joey pushes on a door that is stuck with 400N of force, but is unable to move it. How much work has he done?

3) A 60W light bulb burns for 2 minutes. How much work was done?

4) How much power is used if it takes Jamel (a 450N boy) 3 seconds to run 2 meters?

5) How much work is required to pull a sled if you use 60W of power 5 seconds.



NOTE: IMPORTANT FORMULAS

F=m×a.
W=f×d
P=w/t

Answer 1

#1 is 90N
#2 is i think 0N
#3 is 120N
#4 is 2700N
#5 is 300N