Answer:
15.8 ft/s
Explanation:
= Velocity of car A = 9 ft/s
a = Distance car A travels = 21 ft
= Velocity of car B = 13 ft/s
b = Distance car B travels = ft
c = Distance between A and B after 4 seconds = √(a²+b²) = √(21²+28²) = √1225 ft
From Pythagoras theorem
a²+b² = c²
Now, differentiating with respect to time
∴ Rate at which distance between the cars is increasing three hours later is 15.8 ft/s
Answer:
Explanation:
From the question we are told that:
coefficient of static friction 
Velocity 
Generally the equation for Conservation of energy is mathematically given by
The particles are heating up so they are starting to move faster and closer together which causes them to change the pressure of the container
Answer:
390 N
Explanation:
The net acceleration is:
a² = aₓ² + aᵧ²
a² = (900 m/s²)² + (870 m/s²)²
a = 1250 m/s²
So the net force is:
F = ma
F = (0.31 kg) (1250 m/s²)
F = 390 N
