4. A truck with mass of 3000 kg traveling with a velocity of 15 m/s hits a car at rest. After the collision, the truck moves with a velocity of 10 m/s. If the car has a mass of 2000 kg and
the two vehicles do not stick together, how fast is the car moving after the collision? Is this
an elastic or inelastic collision?

seeing the graph would

continuous conducting path for current, power supply

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min