Answer:
2000 N
1600 N
Explanation:
Step 1:
It is given that the bear's weight is 2000 N and it slides down the tree with constant velocity. Since it is sliding with constant velocity the overall force on the bear is zero. The weight of the bear acting downward balances the upward force caused due to friction. Hence the upward force equals the weight 2000 N.
Step 2:
It is given that the bear slides down with an acceleration 2 m/sec sq
Weight of the bear = 2000 N
Mass of the bear = 2000/10 (taking g = 10 m/sec sq)=200 kg
Force = Mass * Acceleration
Hence net force acting downward = 200*2=400 N.
Net force = Weight of bear - Force acting upward on the bear
400 = 2000 - Force acting upward on the bear
Force on the bear acting upward = 2000 - 400 = 1600 N
There are six skill-related fitness components: agility, balance, coordination<span>, </span>speed<span>, power, and reaction time. Skilled athletes typically excel in all six areas. Agility is the ability to change and control the direction and position of the body while maintaining a constant, rapid motion.</span>
Answer:
0.0757 kg
Explanation:
m = mass of the body = 95 kg = 95000 g
ΔT = change in the temperature of the body = 0.45 °C
c = specific heat capacity of the body = 4.0 J/(g °C)
M = mass of water evaporated
L = latent heat of vaporization of water = 2260 J/g
Using conservation of heat
Heat gained by water = heat lost by body
ML = m c ΔT
M (2260) = (95000) (4.0) (0.45)
M = 75.7 g
M = 0.0757 kg
Answer:
The basic unit of matter is atoms
Answer:
a
Explanation:
the kinetic energy decreases which makes the molecules bond together, that makes them not be able to move much
