How Do You Find Acceleration and Total Distance in a Car's Journey?

AI Thread Summary
To find the acceleration of the car, use the formula a = (final velocity - initial velocity) / time, which gives an acceleration of 1 m/s². The car travels at a constant speed of 72 km/h (20 m/s) for 5 minutes, covering a distance of 6000 meters during this time. After applying brakes, the car stops after covering an additional 100 meters, resulting in a total distance of 6100 meters. The total time includes 20 seconds of acceleration, 300 seconds of constant speed, and the time taken to stop, which can be calculated using the deceleration. The overall total time used can be determined by adding these time intervals together.
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Homework Statement


A Car starts from the rest, accelerate and reaches the speed of 72Km/h in 20s. It keeps the speed for 5 minutes and then applies brakes and stops after covering a distance of 100m.
find:
Acceleration, Declaration, Total Distance Covered And Total Time Used..
please help me,



Homework Equations





The Attempt at a Solution

 
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What have you tried doing?
 
A car start from rest accelerate .
Is it constant acceleration? And you have to show us some of your work
 
Show us some of your ideas on how to approach the problem even if you think they are wrong.
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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