Question

More help please

Answer 1

A 50.0 kg sailor climbs a 28.3 m rope ladder at an angle of 45.0° with the mast. How much work did he do?
(Points : 3)
1.00 × 103 J

9,810 J

13,900 J

490 J

Answer 2

Okay so the only force he is resisting is the force of gravity.

Answer 3

13,900 more less 23.6

Answer 4

Now that I have pointed that out you are able to know the potential energy at the top of the mast which is mgh and if the system is conservative that is the amount of energy it required to get up there. Energy is equal to work so you get \[E = w = Fd\] so you could find any of those terms you wanted

Answer 5

e=mc/2

Answer 6

http://openstudy.com/study#/updates/511c5d33e4b03d9dd0c3ef37

Answer 7

pi=all

Answer 8

with pi you have the very small and the very big

Answer 9

A man begins pushing a lawn mower across a lawn from a standing start. Which of the following is true? The man is decreasing the kinetic energy of the lawn mower.

The kinetic energy of the lawn mower is not changing.

The man is increasing the kinetic energy of the lawn mower.

You cannot tell whether the kinetic energy of the lawn mower is increasing or decreasing from the information given.

Answer 10

pi is area the motion of the man + the lawn mower

Answer 11

would he me increasing ?

Answer 12

*he be

Answer 13

at what pi is the lawn mower at the tool clock wise motion or counter wise on the horiztal or vretical plain

Answer 14

i don't know

Answer 15

then both

Answer 16

both of ?

Answer 17

with so much uncertainty the answer can be both

Answer 18

A is like something like a rest with potential F but B with not willing go forward, F will want to go left so the lost potential F many be greather than the gain