Question

A 10 kg wagon schools with a force of 7 Newton for 1.5 second then with a force of 5 Newton 1.7 seconds and then the force of 10 Newton for 3 second in the same Direction What is change in velocity brought abt??

Answer 1

7*1.5+5*1.7+10*3=10.5+8.5+30=49
So mv= 49
V =49/10=4.9m/s