Question

A force acts for 10 s on a stationary body of mass 100 kg, after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate : The acceleration produced by the force

Answer 1

Mass, m = 100 kg

Distance moved, s = 100 m

Initial velocity, u = 0

From Newton's third equation of motion,

v² - u² = 2as.

Or, a = (v² - u²) /2s.

Or, a = [ (20²  -  0²)/ 2(100) ] ms^-2.

Or, a = 2 ms^-2.