Question

PLEASE HELP ME URGENT​

Answer 1

Answer:

work done=2000J and power=1000w

Explanation:

(a) Work done= Gravitational potential energy

W=mgh

Data,

m=10kg

h=20m

g=10N/kg

W=10kg*10N/kg*20m

W=2000J or 2kJ

(b). power=work done/time

P=2000/2

P=1000w

Answer 2

Here's the solution,

A.) calculate work done :

we know,

$weight \: = mass \times acceleration$

• $weight = 10 \times 10$

• $weight = 100 \: Newtons$

And,

$work \: done = force \times dispacement$

• $work \: done = 100 \: \times \: 20$

• $work \: done = 2000 \: joules$

B.) find power :

$power = \dfrac{work \: done}{time}$

• $power = \dfrac{2000}{2}$

• $power = 1000 \: watt$