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

Physics

Esteban Wade

7 April, 19:03

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?

+1

Answers (2)

Know the Answer?

Ivy Oneal · Answer 1

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

t = √ (60/2.1)

Chanel Drake · Answer 2

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