Answer:
Step-by-step explanation:
first place)
in first place you must Know by definition that a joule is defined as the amount of work done by a constant force in a meter of length
and it is 1 J = 1 N ×m = 1 kg ×m/s² ×m= 1 Kg×m²/s²
now you can calculate the time done by ken and his bicycle
1000000 = 52kg×(1600)²/s² = 1000000= 133120000/s²⇒1000000s² = 133120000⇒s²= 133120000/1000000⇒ s² =133,12⇒s =√133,12 = 11,5 ≅12
12 s is the time that ken with his bicycle ride up to the mountain
second )
having the time you can calculate the work done by ken individually
52kg×(1600)²/(12)² =133120000/ (12)² = 924444,4 and this is the work done by ken
Now you must substract the work done by ken and his bicycle from the work done by ken individually in order to know the work of the bicycle
1000000 joules -924444,4 joules = 75555,6 joules
Having this amount, you can calculate the mass of the bicycle
and it is 1 J = 1 N ×m = 1 kg ×m/s² ×m= 1 Kg×m²/s²
75555,6 = kg *(1600) ²/(12)²⇒ 75555,6 =17777,7kg⇒ Kg = 75555,6/17777,7 = 4,25 kg
the mass of the ken's bicycle is 4,25 kg
