Question

A sled is at rest at the top of 2m high slope. The sled has a mass of 45 kg. The sled's potential energy is J. (Formula: PE = mgh)

Answer 1

PE=MGH
PE=2×45×10
PE=900J
SO SLED'S POTENTIAL ENERGY IS 900J

Answer 2

Hello!

Data:  

h = 2m

m = 45 Kg

PE = ? (Joule)  

Adopting, gravity (g) ≈ 9,8 m/s²

Formula:  $PE_{grav} = mass * g * height$

Solving:  

$PE_{grav} = mass * g * height$

$PE_{grav} = 45*9,8*2$

$\boxed{\boxed{PE_{grav} = 882\:J}}\end{array}}\qquad\checkmark$

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I Hope this helps, greetings ... Dexteright02! =)