Question

An object with a mass 10 kg moves at a constant velocity of 10m/s. A constant force then acts for 4 sec on the object and gives it a speed of 2 m/sec in opposite direction. The acceleration produced in it

Answer 1

v= u + at

at= v - u

a= v - u/ t

a= 2-10/ 4

a= -8/4

a= -2 m/s