http://www.ck12.org Chapter 4. Newton’s Laws
Question: a=?[m/s^2 ]
Given: m= 175 grams= 0. 175 kg
F= 19. 0 NEquation: a=Fmnet
Plug n’ Chug: a=Fmnet= 019. 175.^0 Nkg=
19. 0 kgs· 2 m
0. 175 kg=^109m
s^2
Answer:
109 m/s^2Example 2
Calculate the acceleration of a rocket that has 500N of thrust force and a mass of 10kg.
Question: a=?[m/s^2 ]
Given: m= 10 kg
Fthrust= 500 N
g= 10. 0 m/s^2Equations:∑Findividual forces=ma
or, in this case,∑Fy−direction forces=may
Plug n’Chug:Use FBD to “fill in” Newton’s second law equation:
∑Fy−direction forces=may
F−Mg=Ma
500 N− 10 kg( 10 m/s^2 ) = 10 kg(a)
a= 40 m/s^2Watch this Explanation