Answer:
20,000 N
Explanation:
First find the acceleration:
a = Δv / Δt
a = (0 − 40 m/s) / 10 s
a = -4 m/s²
Next use Newton's second law to find the force on the car:
F = ma
F = (5000 kg) (-4 m/s²)
F = -20,000 N
According to Newton's third law, the force on the wall is equal and opposite the force on the car.
F = 20,000 N
Explanation:
a.) kg(m/s)(1/s) = force (N)
b.) (kg/s)(m/s) = force (N)
c.) (kg/s)(m/s) = force (N)
d.) (kg/s)(m/s) = force (N)
The pitch of the sound of the car will appear to be <span>lower than the pitch of the car next to you</span>
Initial speed(u)=0m/s
Final speed(v)= 27m/s
Time(t)=7.6s
Use the equation of motion: v = u + at
27 = 0 + a(7.6)
27/7.6 = a
a = 3.55 m/s^2 (3 s.f)
