If a hockey player starts from rest and accelerates at a rate of 2.1 m/s2, how long does it take him to skate 30 m?

Question

Ramon Gay

Physics

4 August, 14:43

If a hockey player starts from rest and accelerates at a rate of 2.1 m/s2, how long does it take him to skate 30 m?

+4

Answers (2)

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Yuliana · Answer 1

U = 0

a = 2.1 m/s²

s = 30m

t = ?

s = ut + 1/2 at²

⇒ 30 = 0*t + 1/2 * 2.1 * t²

⇒ 30 = 1.05 t²

⇒ t² = 30/1.05 = 28.57

⇒ t = √28.57

⇒ t = 5.34 second

It will take 5.34 second

Kadyn Pace · Answer 2

X = 1/2 * a * t² = 30 = 1/2 * 2.1 * t²

t = √ (60/2.1)