Answer:
2 m/s²
Explanation:
Acceleration: This can be defined as the rate of change of velocity. The S.I unit of acceleration is m/s²,
The expression for acceleration in therms of force and mass is given as,
Fn = ma............. Equation 1
Where Fn = net force, m = mass, a = acceleration
But
Fn = F-F'........... Equation 2
Where F = Horizontal applied force, F' = Frictional force
Substituting equation 2 into equation 1
F-F' = ma.................... Equation 3
making a the subject of the equation
a =(F-F')/m............... Equation 4
Given: F = 30 N, F' = 10 N , m = 10 kg
Substitute into equation 4
a = (30-10)/10
a = 20/10
a = 2 m/s²
Hence the acceleration = 2 m/s²
