Power Problem Homework: Compare Cart Delivery

[layla2525]

Homework Statement

I push two frictionless carts along a table, using a force of 10 N on each. Riding on one cart is a squid and on the other cart is a mango. They have the same mass. The squid's cart is moving at 2.0 m/s when I start pushing, in the same direction that I push. The mango's cart, on the other hand, starts from rest. Compare the power that I am delivering to each cart.

Which of the following is correct?

I am delivering more power to the cart with the squid.

I am delivering more power to the cart with the mango.

I am delivering the same power to both since the force is the same.

Homework Equations

P=F(V)

The Attempt at a Solution

I can substitute ma for force and V0 +(1/2)a(t) for V. But i have two unknows a and P.
Am I applying more power to the cart with the squid because the initial velocity 2.0 ?

 

[voko]

Since P = FV, and F is the same, the question boils down to the comparison of the velocities. Can you say which one is greater? Is it always greater? Why?

 

[layla2525]

I need the acceleration to solve for the velocity...

 

[voko]

You have the force. Surely you can obtain acceleration.

 

[layla2525]

can i use 9.8 for acceleration? in that case squid has a greater velocity since it started at 2.0

 

[voko]

Why 9.8? Why not 370913.2?

 

[layla2525]

Where are getting that number from?