The SI unit of length or distance is the meter.
Answer:
10 kg
Explanation:
Assuming a frictionless surface, then force F=ma where F is the applied force, m is the mass and a is acceleration. Making m the subject of the formula then 
Substituting 100 N for the applied force F and 10 m/s^2 for acceleration a then the value of m will be 
Therefore, in terms of kilograms, the bookshelf weighs 10 Kg
Ok cool dude bro I just need to answer a question
Answer:
motion energy
Explanation:
motion wnergy is the sum of potential and kinetic energy
B. False
Endothermic reactions absorb heat.