A car leaves the pit after a refueling stop and accelerates uniformly to a speed of 62.2 m/s in 5.0 s to rejoin the race.
1 answer:
Answer:
The car's acceleration is: a = 12.44 [m/s²]
Explanation:
To solve this problem we must use the following equation of kinematics.
where:
Vf = final velocity = 62.2 [m/s]
Vo = initial velocity = 0 (because the car stars from the rest)
a = acceleration [m/s²]
t = time = 5 [s]
62.2 = 0 + a*5
a = 12.44 [m/s²]
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Answer:
0.67 m/s
Explanation:
Mass of car 1, m₁ = 5000 kg
Mass of car 2, m₂ = 10,000 kg
Initial speed of car 1, u₁ = 2 m/s
Final speed of car 2, u₂ = 0 (at rest)
We need to find the final velocity of both cars when inelastic collision occurs. The momentum will remain conserved in case of inelastic collision. Using the conservation of momentum. Let V is the final speed.
So, after the inelastic collision, they will move with a speed of 0.67 m/s.