The radius of Earth's circular trajectory is
The time for the Earth to travel around the Sun is
Thus the velocity is velocity
From this we can deduce the centripetal acceleration
Angular velocity is
Answer:
Acceleration
Explanation:
The choice from the given option which is not a force is acceleration.
Acceleration is defined as the rate of change of velocity of a body with time;
Acceleration = 
Force is a pull or push on a body. The product of mass and acceleration is force.
- Thrust is a form of force
- Gravity is a force acting on bodies with masses.
- Friction is a force that opposes motion,
The answer is behaviorism !! <3
- Initial velocity=20m/s
- Final velocity=0m/s(As the car stops)
- Acceleration=-8m/s^2
- Distance=s=26m
We need to verify the thrid equation of kinematics here
The squirrel has a good luck ,Car gets stopped just 1m away from the squirrel .
Heat lost or gained, H = mc(θ₂ - θ₁)
Where m = mass, c = Specific heat capacity, θ₂= final temperature, θ₁ = initial temperature
m = 200g, c = 0.444 J/g°C, θ₁ = 22 °C (Since it was cooled).
H = 6.9 kj = 6.9 *1000J = 6900 J
6900 = 200*0.444* (θ₂ - 22)
6900/(200*0.444) = θ₂ - 22
77.70 = θ₂ - 22
θ₂ - 22 = 77.7
θ₂ = 77.7 + 22 = 99.7
So initial temperature before cooling ≈ 100°C . Option C.
