If an object is moving at a speed of 5 m/s and has a kinetic energy of 600 J, what must its mass be?

48 kg

Explanation:

Kinetic energy = ½mv²

600 J = ½m (5)²

m = 600 × 2 = 25 = 48 kg

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper

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