A toy car falls to the ground in 0.4 s. Calculate its speed just before striking the ground. (Assume g = 10ms^-2)

t=0.4s,g=10m/s,u=om/s,v=? Using first equation of motion v=u+at =》v=0+10×0.4 =》v=4m/s Speed of toy car falls is 4m/s.