Wayne exerts a force of 70.9 N to pull a 409 N

sled along a snowy path using a rope that
makes a 48◦
angle with the ground. The sled
moves 19.9 m in 4.3 s.
What is Wayne’s power?
Answer in units of W.
PLEASE HELP!

See previous post: Sat,1-17-15, 6:18 PM.

To find Wayne's power, we need to use the formula:

Power = (Work done) / (time interval)

First, let's calculate the work done by Wayne. Work is defined as the force applied multiplied by the displacement in the direction of the force. In this case, the force is the component of Wayne's force that is in the same direction as the movement of the sled.

The force component in the direction of the sled's movement can be found using the equation:

Force component = Force * cos(angle)

Angle is given as 48 degrees, so we can calculate the force component:

Force component = 70.9 N * cos(48°)

Next, we can calculate the work done:

Work done = Force component * displacement

The displacement is given as 19.9 m, so we can calculate the work done:

Work done = (70.9 N * cos(48°)) * 19.9 m

Now, we need to calculate the power using the given time interval. The time interval is given as 4.3 s.

Power = Work done / time interval

Now we can substitute the values we've calculated into the formula to find Wayne's power.