Question

pls pls pls give me answer this question

Answer 1

force is equal to mass into acceleration here v is 40 m/sec and u is 0m/sec t is 12 sec
a =v-u/t so 40 /12= 10/3 m /sec square
100g =0.1 kg
force =0.1×10/3= 1/3
3.33N