... equate: change in kinetic energy of system = net work done on system 1/2 m (

**v**^2 -**u**^2) = m a**s**multiply both sides with 2 and divide with m :**v**^2 -**u**^2 = 2 a**s**add**u**^2...1 Answers · Science & Mathematics · 06/11/2013

**u**= 15 m/**s**(a) How**long**does it take the ball to reach the highest point of the...at ground level. T (up) = ? T (down) = ?**v**=**u**+ gt 0 = 15 + (-9.8)t .................... At highest point...1 Answers · Science & Mathematics · 09/02/2013

...20cm/

**s s**= 40cm t = ? a = ? Part (i) wants t. So we use**s**= (**u**+**v**)/2 * t, which rearranges to give: t = 2s/(**u**+**v**) t = 80/(30 + 20) = 1.6s...3 Answers · Science & Mathematics · 02/04/2012

**u**-initial velocity**s**-displacement**v**-final velocity t-time taken Given**s**=8,**u**=9.1,**v**=0**s**=0.5(**v**+**u**)t t=2s/(**v**+**u**) =2*8/(0+9.1) =1.76s t in the air=1.76/2 =0.88s2 Answers · Science & Mathematics · 02/11/2007

given terms

**u**= 100m/**s v**=0 g=9.8m/**s**t=? formula is**v**=**u**-gt so t=(**v**-**u**)/-g =(0-100)/-9.8...5 Answers · Science & Mathematics · 17/09/2010

After a " long time", V _C = 12V. Energy stored in capacitor. U = ½ Q² / ...capacitor: 1 W = 1 J/ s Energy used = 1...

1 Answers · Science & Mathematics · 15/09/2013

...: ( v ↑)² = ( u ↑)² + 2as s = (( v ↑)² - ( u ↑)²) / 2a s = (0² - 2.41²) / (2 x -9.8) = -5.81 / -19.6 s = 0.296 m Range of long jumper (distance jumped): R = (← v ) t...

2 Answers · Science & Mathematics · 28/10/2012

Up

**u**=2.8 m/**s v**=0m/**s**a=-9.8m/**s**/**s**t=?**s**=?**s**=(**v**^2 -**u**^2) / 2a**s**= (0 - 7.84) / -19.6 = 0.4m Down**u**=0m...the way if you were wondering**u**=initial velocity**v**=final velocity a=acceleration t=time**s**=displacement3 Answers · Science & Mathematics · 11/10/2008

... = I mΔ v ̂/Δt I = 64.5( v - u )/ Δt u = 8.35 m/ s v = 0 m/ s Δt = ? IF̂ₐᵥₑI = -240 N = 64.5( v - u ...

2 Answers · Science & Mathematics · 16/10/2014

1)

**u**=5*10^3 m/**s v**=10*10^3 m/**s**a=1*10^6 m/**s**^2 t=**v**-**u**/a =5*10^-3**s S**=ut+0.5at^2 =37.5 m 2...the top his final velocity will be 0]**u**= 5.03 m/**s**t=**v**-**u**/a =0.513**s**time to rise to the peak=time to come...1 Answers · Science & Mathematics · 03/06/2013