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aleksley [76]
2 years ago
7

A bus slams on its breaks and goes from 30km/hr to 15km/hr in 4 seconds. What is its acceleration?

Physics
2 answers:
Shtirlitz [24]2 years ago
7 0

Answer:

− 2.08

Explanation:

GalinKa [24]2 years ago
4 0
Note the equation v = v0 + at, where v is the final velocity in meters per second, v0 is the initial velocity in meters per second, a is the acceleration, and t is the time in seconds.

Fist convert the velocities so 30km/hr=8.333m/s and 15km/hr=4.167m/s

Plugging this into the equation, we get
4.167 = 8.333 + a(4)
=> -4.167 = a(4)
=> a = -1.042 m/s^2
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