a paramedic drives an ambulance at a constant speed of 75km/hr on straight stree

Question

a paramedic drives an ambulance at a constant speed of 75km/hr on straight street for ten city blocks, because of heavy traffic, the driver slows down to 30km/hr in 6 seconds and travels two more blocks. what is the average acceleration of the vehicle? in m/s a paramedic drives an ambulance at a constant speed of 75km/hr on straight street for ten city blocks, because of heavy traffic, the driver slows down to 30km/hr in 6 seconds and travels two more blocks. what is the average acceleration of the vehicle? in m/s a paramedic drives an ambulance at a constant speed of 75km/hr on straight street for ten city blocks, because of heavy traffic, the driver slows down to 30km/hr in 6 seconds and travels two more blocks. what is the average acceleration of the vehicle? in m/s

Explanation / Answer

Here ,

intial speed of the ambulance , u = 75 km/hr

u = 75 * 1000/3600 m/s

u = 20.83 m/s

final speed , v = 30 km/hr

v = 30 * 1000/3600 m/s

v = 8.33 m/s

Now, time taken , t = 6 s

using first equation of motion

v = u + a * t

8.33 = 20.83 + a * 6

a = - 2.08 m/s^2

the average acceleration of the vehicle is - 2.08 m/s^2

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.