Spaceman Spiff's space box wights 60N. its engine exerts a +312N of force at lift-off. what is the acceleration when it lifts off
Have you learned Newton's
F = m a equation?
It can be rewritten a = F/m
F = force = 312 N
m = 60N/g = 6.12 kg
(Weight in N must be converted to mass in kg)
a = 51 m/s^2