During a test, a powered wheelchair carries a passenger along a straight, level corridor. The wheelchair and passenger have a combined mass of 200 kg. The motors exert a forward force of 160 N while resistive forces total 60 N.
What is the acceleration of the wheelchair?
0.50 m s−20.50\ \mathrm{m\,s^{-2}}0.50 ms−2
0.30 m s−20.30\ \mathrm{m\,s^{-2}}0.30 ms−2
1.1 m s−21.1\ \mathrm{m\,s^{-2}}1.1 ms−2
0.80 m s−20.80\ \mathrm{m\,s^{-2}}0.80 ms−2