A 50 kg boy runs and jumps with a forward velocity of 1.5 m/s into a 125 kg stationary boat. What is the final velocity of the boy/boat system?

A .43 m/s forward
B .43 m/s backward
C 1.1 m/s forward
D 1.1 m/s backward

probably not if net force is zero

which three statements are true about all alloys?

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.