Find Position in Uniform Motion: Car Moving on a Straight Line

  • Thread starter Thread starter jo3jo3520
  • Start date Start date
  • Tags Tags
    Motion Uniform
AI Thread Summary
In uniform motion, an object moves at a constant speed along a straight line, meaning its velocity does not change over time. To find the position at different times, the general equation used is x = x1 + vt, where x is the position, x1 is the initial position, v is the constant speed, and t is the time elapsed. In the example provided, if a car travels from x1=13m to x2=3m over 30 seconds, the speed can be calculated to determine the position at any given time. Additionally, for the trip between two cities, the average speed can be calculated by dividing the distance by the time taken. Understanding these concepts allows for accurate predictions of position in uniform motion scenarios.
jo3jo3520
Messages
27
Reaction score
0
Im just throwing small numbers here so i can get help on the general idea...Im driving a car in uniform motion along a straight line. I go from a position x1=13m at time t1=0 secs to x2=3-m at time t2 = 30 seconds? can anyone help me with the general equation to find the position at different times?
 
Physics news on Phys.org
What does uniform motion mean about the speed of your car? Then, what equation in general describes that situation relating position x to speed and time?

If you left city A at 8am and arrived at city B at 11am, and they are 180 miles apart, and you are in uniform motion on the trip...
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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}...
Back
Top