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In this question you are given frequency and wavelength of the wave and you are asked for the speed. You need to use the formula on you sheet that uses these three properties : v = f x λ, where v is the s...

1. Calculate the speed the ball is travelling at when it reaches 150m using v² = u² + 2ax. 2) Calculate the distance travelled in 3 seconds by an object with a speed of that found...

it is the change in speed over time. So  a = v-u / t

²⁰⁸₈₃Bi ==> ^x_yZ + ⁴₂a + ⁴₂a + ⁰₁B x = 208 - 8 = 200 y = 83 - 5 = 78 Proton number = 78 ther...

E_k = (1/2)mv²

E_p = mg(dh)

Set these equal to each other, because of conservation of energy:

(1/2)mv² = mg(dh)

Cancel the mass: