Berat kereta a adalah 600 kg da
seberat 800 kg yang bergerak de
kereta b bergerak ke hadapan a
kereta a selepas perlanggaran.
ovo kg yang bergerak dengan halaju 20 m/s dalam ara
bergerak ke hadapan dengan halaju 30 m/s selepas pela
gan halaju 40 m/s bersama kereta b
is dalam arah yang sama. jika
selepas pelanggaran kira halaju

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.