Use the value for you found in the previous question to find if = 2 s. Which equation do you need? W P t Given = 12 joules, and = 0.5 m, find using the fourth equation? Us x k For the same value of as given in problem 20 and the value you just found, use the last equation in x k Fs? Section B to find Fs, Assuming = 0° and = use the third equation listed above along with the numbers found and F θ given in the previous two questions to find W? vavg For = 2100 W, = 30 N, and = 0°, find using the last equation in this section? P F θ Section E: For problems 24 26, use the equations below. – p = mv J = FΔt = Δp = mΔv Δp is 12 kgm/s and is 25 kg. Find using the first equation? If p m v The symbol means state minus initial state”. So, means and means Find vf vi pf pi. “∆” “final ∆v – ∆p – using the third equation if = 50 kgm/s, = 12 kg, and and are both zero? vf pf m vi pi Use the second and third equation together to find if = 0 m/s, = 95 kg, = 6000 N, and vi vf m F = 0.2 s? ∆t
Use the value for W you found in the previous question to find P if t = 2 s. Which equation do you need? Given Us = 12 joules, and x = 0.5 m, find k using the fourth equation? For the same value of x as given in problem 20 and the k value you just found, use the last equation in Section B to find Fs? Assuming θ = 0° and F = Fs, use the third equation listed above along with the numbers found and given in the previous two questions to find W? For P = 2100 W, F = 30 N, and θ = 0°, find vavg using the last equation in this section? Section E: For problems 24 – 26, use the equations below. p = mv J = FΔt = Δp Δp = mΔv If p is 12 kgm/s and m is 25 kg. Find v using the first equation? The symbol “∆” means “final state minus initial state”. So, ∆v means vf – vi and ∆p means pf – pi. Find vf using the third equation if pf = 50 kgm/s, m = 12 kg, and vi and pi are both zero? Use the second and third equation together to find vi if vf = 0 m/s, m = 95 kg, F = 6000 N, and ∆t = 0.2 s?
AP_Physics_I_2017_Summer_Assignment.docx