Speed, acceleration time and distance

Thread starter ybm
Start date Dec 22, 2009
Tags

Acceleration Speed Time

AI Thread Summary

A car traveling at 4.2 m/s accelerates at 1.1 m/s² for 7.4 seconds. To calculate the distance traveled, the equation D = Vot + 1/2at² is used. Substituting the values, the initial velocity (Vo) is 4.2 m/s, acceleration (a) is 1.1 m/s², and time (t) is 7.4 seconds. The solution reveals the car travels a total distance of 38.81 meters. This demonstrates the application of kinematic equations in solving motion problems.

Dec 22, 2009

ybm

[SOLVED] Speed, acceleration time and distance

Homework Statement

A car is traveling at 4.2m/s and accelerates at 1.1ms (squared).

In the time of 7.4 seconds how far has the car travelled?

Homework Equations

Not sure.

The Attempt at a Solution

I can't work it out so I'd really appreciate a little help, I know I sound dumb but i need it!

Last edited: Dec 22, 2009

Physics news on Phys.org

Dec 22, 2009

jegues

D = Vot + 1/2at^2

Dec 22, 2009

ybm

Thank you so much :)

Thread 'I've come across another fluid pressure problem I don't understand'

Neglect gravity other than that of water; neglect friction. F1=ρgsh=1000*10*1*(1+4)=50000 N; F1=ρgsh=1000*10*0.1*4=4000 N; F3=50000-4000=46000 N?

View full post »

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}...

View full post »

Thread 'Understanding Forces and their Vector Components'

I was told forces are vectors so they can be divided into x and y components, but what about the normal force or the force of static friction? do you divide those into x and y components if say you had a block that was lying on an angled surface?

View full post »