Answer:
1) 0.51 seconds.
2) 1.45 m/s.
Explanation:
given, height from which cat falls = 1.3 m
we know that, s = ut + at².
here if we consider cat moment only in downward direction,
intial velocity of cat in downward direction , u = 0.
so, time, t = .
⇒ t = = 0.51 seconds.
t = 0.51 seconds.
now, consider cat moment only in forward direction
s = ut , since acceleration is zero in forward direction
⇒ u = .
so, u = = 1.45 m/s .
Answer:The objects in order from least to greatest potential energy:
3<1<4<2
Explanation:
1. Potential energy of a 15-kilogram stone found at a height of 3 meters:
2. Potential energy 10 kilograms of water stored at a height of 9 meters:
3. Potential energy 1-kilogram ball located 20 meters in the air:
4. Potential energy box of books weighing 25 kilograms placed on a shelf 2 meters high:
The objects in order from least to greatest potential energy:
3<1<4<2
